Nuevos datos acerca de los repertorios teatrales en el primer catálogo de «El peregrino en su patria»

En este artículo se muestra cómo los títulos que contienen los repertorios de los autores de comedias presentes en El peregrino en su patria de 1604 están dispuestos según un orden cronológico, aunque con algunos matices y no pocas excepciones. Además, se amplían los repertorios descubiertos por Thornton Wilder y se afina la fecha de composición de varias obras, prestando especial atención a textos que se han perdido, como La perdición de España, La gobernadora, La gran pintora, La bella gitana o La toma de Álora. Finalmente, el presente artículo pretende mostrar de un modo práctico cómo una base de datos digital como el Diccionario biográfico de actores del teatro clásico español (DICAT) puede resultar de gran ayuda a la hora de resolver algunos de los problemas clásicos de la filología en general y del teatro del Siglo de Oro en particular.This paper shows that the plays contained in the repertoire of the autores de comedias which appear in El peregrino en su patria (1604) are organised chronologically, although there are some nuances and exceptions. The article also expands the repertoire discovered by Thornton Wilder and sets the date of composition for some plays, paying special attention to lost texts such as La perdición de España, La gobernadora, La gran pintora, La bella gitana or La toma de Álora. Finally, this paper attempts to show in a practical way that a database such as the Diccionario biográfico de actores del teatro clásico español (DICAT) can be extremely helpful when it comes to dealing with some of the philology's classical problems in general and those of the theatre of the Golden Age in particular

Methylene Arenium Cations via Quinone Methides and Xylylenes Stabilized by Metal Complexation

The quinone methide (QM) rhodium complex of 3,5-bis(di-tert-butylphosphinomethyl)-2,6-dimethyl-4-methylene-3,5-cyclohexadien-1-one (L) (1) was protonated by trifluromethanesulfonic acid (triflic acid) at the quinonoid carbonyl group giving the unique methylene arenium complex (Cl)Rh[LH+]CF3SO3- (2). Complexes 2 and its (trimethyl)silyl analogue (3) were fully characterized spectroscopically, and complex 2 was also characterized by single-crystal X-ray analysis. The crystallographic studies on 2 have revealed that the positive charge is delocalized between the carbon atoms of the ring with most of it being at the para- and ortho-carbon atoms. The electron deficient QM complex (CO)Rh+[L] CF3SO3- (4), which has also been crystallographically characterized, is less basic, requiring excess of triflic acid to obtain the methylene arenium complex (CO)Rh+[LH+]2CF3SO3- (5), demonstrating a dramatic effect of the electron density on the metal center on the stability of the methylene arenium species. When 1 was reacted with 2−3 equiv of MeLi formation of two complexes, MeRh[3,5-bis(di-tert-butylphosphinomethyl)-2,6-dimethyl-4-methylene-3,5-cyclohexadien-1-en] (6) and its ortho-xylylene isomer (7), took place. Complexes 6 and 7 represent the first example of thermally stable xylylenes coordinated via only one of the exocyclic double bonds. Both 6 and 7 undergo protonation by CF3SO3H giving as a single product the arenium complex CF3SO3Rh[3,5-bis(di-tert-butylphosphinomethyl)-1,2,6-trimethyl-4-methylene-3,5-cyclohexadienyl]+CF3SO3- (8). 13C NMR studies performed on the arenium complexes shows no para-substituent effect on the chemical shift of the coordinated CH2 group and that this group does not participate in the positive charge delocalization. Thus, the reported methylene arenium compounds can be viewed as a resonance form of a benzyl cation stabilized by metal complexation

Unsaturated Pd(0), Pd(I), and Pd(II) Complexes of a New Methoxy-Substituted Benzyl Phosphine. Aryl−X (X = Cl, I) Oxidative Addition, C−O Cleavage, and Suzuki−Miyaura Coupling of Aryl Chlorides

The 14e- Pd(0)L2 complex 2 was prepared by reduction of [Pd(2-methylallyl)Cl]2 in the presence of the new, electron-rich, bulky methoxy benzyl phosphine (dmobp) ligand 1. Structural characterization of this complex indicates that the methoxy groups are not coordinated to the metal center. Complex 2 undergoes oxidative addition of iodo- and chlorobenzene at room temperature to yield the monophosphine complexes LPd(Ph)X (4, X = I; 5, X = Cl) in which the methoxy group is coordinated to the Pd(II) center in the solid state, as indicated by the X-ray structure of 4. In solution there is no evidence for methoxy coordination, indicating the availability of a Pd(II) 14e- complex. The Me−O bond in 4 is longer than the corresponding bond in 2, indicating that coordination of the methoxy group weakens the C−O bond. Reaction of complex 4 or 5 with the free ligand 1 results in nucleophilic attack and C−O cleavage, leading to the dimeric phenoxy-bridged complex 7, which was structurally characterized. Partial reduction of [Pd(2-methylallyl)Cl]2 in the presence of the ligand 1 leads to the Pd(I) dimer 3, which can be converted to the Pd(0) complex 2 by addition of ligand 1 and a base. This complex, which bears only one phosphine for each Pd atom, is a suitable precursor to a presumed catalytically active 12e- Pd(0) catalyst. Complexes 2 and 3 catalyze the Suzuki−Miyaura cross-coupling of chlorobenzene with PhB(OH)2 even at room temperature, albeit slowly, while the C−O cleaved phenoxy-bridged complex 7 is not catalytically active at 40 °C, indicating that it is not an intermediate in the catalysis. The dmobp ligand 1 is more effective in Suzuki−Miyaura coupling than an analogous benzyl ligand lacking methoxy substituents

Unsaturated Pd(0), Pd(I), and Pd(II) Complexes of a New Methoxy-Substituted Benzyl Phosphine. Aryl−X (X = Cl, I) Oxidative Addition, C−O Cleavage, and Suzuki−Miyaura Coupling of Aryl Chlorides

The 14e- Pd(0)L2 complex 2 was prepared by reduction of [Pd(2-methylallyl)Cl]2 in the presence of the new, electron-rich, bulky methoxy benzyl phosphine (dmobp) ligand 1. Structural characterization of this complex indicates that the methoxy groups are not coordinated to the metal center. Complex 2 undergoes oxidative addition of iodo- and chlorobenzene at room temperature to yield the monophosphine complexes LPd(Ph)X (4, X = I; 5, X = Cl) in which the methoxy group is coordinated to the Pd(II) center in the solid state, as indicated by the X-ray structure of 4. In solution there is no evidence for methoxy coordination, indicating the availability of a Pd(II) 14e- complex. The Me−O bond in 4 is longer than the corresponding bond in 2, indicating that coordination of the methoxy group weakens the C−O bond. Reaction of complex 4 or 5 with the free ligand 1 results in nucleophilic attack and C−O cleavage, leading to the dimeric phenoxy-bridged complex 7, which was structurally characterized. Partial reduction of [Pd(2-methylallyl)Cl]2 in the presence of the ligand 1 leads to the Pd(I) dimer 3, which can be converted to the Pd(0) complex 2 by addition of ligand 1 and a base. This complex, which bears only one phosphine for each Pd atom, is a suitable precursor to a presumed catalytically active 12e- Pd(0) catalyst. Complexes 2 and 3 catalyze the Suzuki−Miyaura cross-coupling of chlorobenzene with PhB(OH)2 even at room temperature, albeit slowly, while the C−O cleaved phenoxy-bridged complex 7 is not catalytically active at 40 °C, indicating that it is not an intermediate in the catalysis. The dmobp ligand 1 is more effective in Suzuki−Miyaura coupling than an analogous benzyl ligand lacking methoxy substituents

Direct Conversion of Alcohols to Acetals and H₂ Catalyzed by an Acridine-Based Ruthenium Pincer Complex

Direct Conversion of Alcohols to Acetals and H2 Catalyzed by an Acridine-Based Ruthenium Pincer Comple

Helically Locked Tethered Twistacenes

Twisting linear acenes out of planarity affects their electronic and optical properties, and induces chirality. However, it is difficult to isolate the effect of twisting from the substituent effect. Moreover, many twistacenes (twisted acenes) readily racemize in solution. Here, we introduce a series of twistacenes having an anthracene backbone diagonally tethered by an <i>n</i>-alkyl bridge, which induces a twist of various angles. This allows us to systematically monitor the effect of twisting on electronic and optical properties. We find that absorption is bathochromically shifted with increasing twist, while fluorescence quantum efficiency drops dramatically. The tethered twistacenes were isolated to their enantiomerically pure form, displaying strong chiroptical properties and anisotropy factor (<i>g</i>-value). No racemization was observed even upon prolonged heating, rendering these tethered twistacenes suitable as enantiopure helical building units for π-conjugated backbones

Unsaturated Pd(0), Pd(I), and Pd(II) Complexes of a New Methoxy-Substituted Benzyl Phosphine. Aryl−X (X = Cl, I) Oxidative Addition, C−O Cleavage, and Suzuki−Miyaura Coupling of Aryl Chlorides

The 14e- Pd(0)L2 complex 2 was prepared by reduction of [Pd(2-methylallyl)Cl]2 in the presence of the new, electron-rich, bulky methoxy benzyl phosphine (dmobp) ligand 1. Structural characterization of this complex indicates that the methoxy groups are not coordinated to the metal center. Complex 2 undergoes oxidative addition of iodo- and chlorobenzene at room temperature to yield the monophosphine complexes LPd(Ph)X (4, X = I; 5, X = Cl) in which the methoxy group is coordinated to the Pd(II) center in the solid state, as indicated by the X-ray structure of 4. In solution there is no evidence for methoxy coordination, indicating the availability of a Pd(II) 14e- complex. The Me−O bond in 4 is longer than the corresponding bond in 2, indicating that coordination of the methoxy group weakens the C−O bond. Reaction of complex 4 or 5 with the free ligand 1 results in nucleophilic attack and C−O cleavage, leading to the dimeric phenoxy-bridged complex 7, which was structurally characterized. Partial reduction of [Pd(2-methylallyl)Cl]2 in the presence of the ligand 1 leads to the Pd(I) dimer 3, which can be converted to the Pd(0) complex 2 by addition of ligand 1 and a base. This complex, which bears only one phosphine for each Pd atom, is a suitable precursor to a presumed catalytically active 12e- Pd(0) catalyst. Complexes 2 and 3 catalyze the Suzuki−Miyaura cross-coupling of chlorobenzene with PhB(OH)2 even at room temperature, albeit slowly, while the C−O cleaved phenoxy-bridged complex 7 is not catalytically active at 40 °C, indicating that it is not an intermediate in the catalysis. The dmobp ligand 1 is more effective in Suzuki−Miyaura coupling than an analogous benzyl ligand lacking methoxy substituents

Unsaturated Pd(0), Pd(I), and Pd(II) Complexes of a New Methoxy-Substituted Benzyl Phosphine. Aryl−X (X = Cl, I) Oxidative Addition, C−O Cleavage, and Suzuki−Miyaura Coupling of Aryl Chlorides

The 14e- Pd(0)L2 complex 2 was prepared by reduction of [Pd(2-methylallyl)Cl]2 in the presence of the new, electron-rich, bulky methoxy benzyl phosphine (dmobp) ligand 1. Structural characterization of this complex indicates that the methoxy groups are not coordinated to the metal center. Complex 2 undergoes oxidative addition of iodo- and chlorobenzene at room temperature to yield the monophosphine complexes LPd(Ph)X (4, X = I; 5, X = Cl) in which the methoxy group is coordinated to the Pd(II) center in the solid state, as indicated by the X-ray structure of 4. In solution there is no evidence for methoxy coordination, indicating the availability of a Pd(II) 14e- complex. The Me−O bond in 4 is longer than the corresponding bond in 2, indicating that coordination of the methoxy group weakens the C−O bond. Reaction of complex 4 or 5 with the free ligand 1 results in nucleophilic attack and C−O cleavage, leading to the dimeric phenoxy-bridged complex 7, which was structurally characterized. Partial reduction of [Pd(2-methylallyl)Cl]2 in the presence of the ligand 1 leads to the Pd(I) dimer 3, which can be converted to the Pd(0) complex 2 by addition of ligand 1 and a base. This complex, which bears only one phosphine for each Pd atom, is a suitable precursor to a presumed catalytically active 12e- Pd(0) catalyst. Complexes 2 and 3 catalyze the Suzuki−Miyaura cross-coupling of chlorobenzene with PhB(OH)2 even at room temperature, albeit slowly, while the C−O cleaved phenoxy-bridged complex 7 is not catalytically active at 40 °C, indicating that it is not an intermediate in the catalysis. The dmobp ligand 1 is more effective in Suzuki−Miyaura coupling than an analogous benzyl ligand lacking methoxy substituents

Unsaturated Pd(0), Pd(I), and Pd(II) Complexes of a New Methoxy-Substituted Benzyl Phosphine. Aryl−X (X = Cl, I) Oxidative Addition, C−O Cleavage, and Suzuki−Miyaura Coupling of Aryl Chlorides

The 14e- Pd(0)L2 complex 2 was prepared by reduction of [Pd(2-methylallyl)Cl]2 in the presence of the new, electron-rich, bulky methoxy benzyl phosphine (dmobp) ligand 1. Structural characterization of this complex indicates that the methoxy groups are not coordinated to the metal center. Complex 2 undergoes oxidative addition of iodo- and chlorobenzene at room temperature to yield the monophosphine complexes LPd(Ph)X (4, X = I; 5, X = Cl) in which the methoxy group is coordinated to the Pd(II) center in the solid state, as indicated by the X-ray structure of 4. In solution there is no evidence for methoxy coordination, indicating the availability of a Pd(II) 14e- complex. The Me−O bond in 4 is longer than the corresponding bond in 2, indicating that coordination of the methoxy group weakens the C−O bond. Reaction of complex 4 or 5 with the free ligand 1 results in nucleophilic attack and C−O cleavage, leading to the dimeric phenoxy-bridged complex 7, which was structurally characterized. Partial reduction of [Pd(2-methylallyl)Cl]2 in the presence of the ligand 1 leads to the Pd(I) dimer 3, which can be converted to the Pd(0) complex 2 by addition of ligand 1 and a base. This complex, which bears only one phosphine for each Pd atom, is a suitable precursor to a presumed catalytically active 12e- Pd(0) catalyst. Complexes 2 and 3 catalyze the Suzuki−Miyaura cross-coupling of chlorobenzene with PhB(OH)2 even at room temperature, albeit slowly, while the C−O cleaved phenoxy-bridged complex 7 is not catalytically active at 40 °C, indicating that it is not an intermediate in the catalysis. The dmobp ligand 1 is more effective in Suzuki−Miyaura coupling than an analogous benzyl ligand lacking methoxy substituents

Unsaturated Pd(0), Pd(I), and Pd(II) Complexes of a New Methoxy-Substituted Benzyl Phosphine. Aryl−X (X = Cl, I) Oxidative Addition, C−O Cleavage, and Suzuki−Miyaura Coupling of Aryl Chlorides

The 14e- Pd(0)L2 complex 2 was prepared by reduction of [Pd(2-methylallyl)Cl]2 in the presence of the new, electron-rich, bulky methoxy benzyl phosphine (dmobp) ligand 1. Structural characterization of this complex indicates that the methoxy groups are not coordinated to the metal center. Complex 2 undergoes oxidative addition of iodo- and chlorobenzene at room temperature to yield the monophosphine complexes LPd(Ph)X (4, X = I; 5, X = Cl) in which the methoxy group is coordinated to the Pd(II) center in the solid state, as indicated by the X-ray structure of 4. In solution there is no evidence for methoxy coordination, indicating the availability of a Pd(II) 14e- complex. The Me−O bond in 4 is longer than the corresponding bond in 2, indicating that coordination of the methoxy group weakens the C−O bond. Reaction of complex 4 or 5 with the free ligand 1 results in nucleophilic attack and C−O cleavage, leading to the dimeric phenoxy-bridged complex 7, which was structurally characterized. Partial reduction of [Pd(2-methylallyl)Cl]2 in the presence of the ligand 1 leads to the Pd(I) dimer 3, which can be converted to the Pd(0) complex 2 by addition of ligand 1 and a base. This complex, which bears only one phosphine for each Pd atom, is a suitable precursor to a presumed catalytically active 12e- Pd(0) catalyst. Complexes 2 and 3 catalyze the Suzuki−Miyaura cross-coupling of chlorobenzene with PhB(OH)2 even at room temperature, albeit slowly, while the C−O cleaved phenoxy-bridged complex 7 is not catalytically active at 40 °C, indicating that it is not an intermediate in the catalysis. The dmobp ligand 1 is more effective in Suzuki−Miyaura coupling than an analogous benzyl ligand lacking methoxy substituents