Réponse à Monsieur Ad. Davy de Virville au sujet de sa publication "Les zones de lichens sur le littoral Atlantique", parue dans le "Bulletin de Mayenne-sciences 1931-1932"

tiré à partDans le « Bulletin de Mayenne-Sciences », 1931-32, Ad. Davy de Yiryille « Assistant à la Sorbonne, Président de Mayenne-Sciences » a publié un long mémoire intitulé : Les Zones de Lichens sur le Littoral Atlantique (pp. 1 à 34). Son auteur me met fréquemment en cause d’une manière peu amène, au sujet de ma note : Observations sur les Lichens Marins et Maritimes du Massif Armoricain (Bull, de la Soc. Sc. de Bretagne, 1931, fasc. III et IV). Le ton général de sa polémique, ton qui d’ordinaire n’est pas en usage dans les milieux scientifiques et que rien dans ma note précitée ne pouvait justifier, me force, à mon corps défendant, à répondre à cef auteur ; d’autant que ses allégations et certaines omissions de sa part, en me citant, peuvent laisser dans l’esprit du lecteur l’impression que je ne suis qu’un plagiaire, voire même un faussaire. Je m’ef—â —forcerai dans cet exposé de garder un ton courtois et d’éviter le langage excessif que de V. emploie à mon égard. Cependant! la vivacité de certaines attaques, plus, nettement personnelles, m’obligera parfois à remettre les choses au point avec quelque énergie. (1)

Bucoliques IV et V

Abbayes H. des. Bucoliques IV et V. In: Bulletin de l'Association Guillaume Budé : Lettres d'humanité, n°21, décembre 1962. pp. 435-440

La culture du Soja est-elle possible en Basse-Bretagne?

des Abbayes H. La culture du Soja est-elle possible en Basse-Bretagne?. In: Revue de botanique appliquée et d'agriculture coloniale, 22ᵉ année, bulletin n°247-248, Mars-avril 1942. pp. 198-200

Fast colorimetric evaluation of optimum conditions for the synthesis of fluorescent molecular probes: Application to neuronal tracers N,N-((dialkyiamino)styryl)-N-alkylpyridinium salts

cited By 4International audienceThe present communication reports the detection of new phosphorus- containing semilabile ligands for the Heck coupling reaction. We have developed a new screening methodology based on the batochrome properties of the cross-conjugated target molecules to rapidly test a large diversity of metal/ligand complexes for this coupling reaction. © 2005 Wiley-VCH Verlag tGmbH & Co. KGaA

Formation of anionic trifunctionalized metallalactones by nucleophilic addition at the β-carbonyl of a pyruvoyl ligand

cited By 10International audienceAnionic nucleophilic reagents Nu- = CH3O-, C2H5O-, t-BuO-, CH 3S-, and P(C6H5)2 - were found to react with (CO)4Fe(CO2CH 3)[C(O)C(O)CH3] to afford two isomers of anionic trifunctionalized metallalactones, (CO)3Fe[C(O)C(CH 3)(Nu)OC(O)](CO2CH3)-, whose formation resulted from an addition of the nucleophile to the β carbonyl of the pyruvoyl ligand. In this reaction, the metallacycle formation was found to occur by a further addition of the oxygen of the same β carbonyl on a terminal carbonyl. In acidic medium, these anionic complexes evolved into neutral metallalactones (CO)4Fe[C(O)C(CH3)(Nu)OC(O)] already obtained by performing the same reaction with pronucleophiles (Nu-H type reagents). Achievement of (CO)4Fe[C(O)C(=CH2)OC(O)] when the reaction was performed with t-BuO- could result from an intermediate formation of the enolate form of the pyruvoyl ligand [Fe]-C(O)-C(=CH2)-O- under basic conditions. © 2005 American Chemical Society

Specific formation of isocyanide iron complexes by reaction of primary carbamoyl ferrates with oxalylchloride

cited By 4International audienceReaction of primary carbamoyl ferrates (CO)4Fe[C(O)NHR] - (R=Me, Et, allyl, decyl, cyclohexyl, t-butyl, benzyl, phenyl) with 1/2 equiv. of oxalylchloride affords cis-bis-carbamoyl intermediates: (CO) 4Fe[C(O)NHR]2 which thermally give rise, in good yields, to the mono-isocyanide complexes (CO)4Fe(CNR). The mechanism of the reaction is discussed. Via a similar process, an alkoxycarbamoyl intermediate (CO)4Fe[C(O)NHR](CO2Me) affords Fe(CO)5 and 1,3-dialkylurea. © 2003 Elsevier Science B.V. All rights reserved

Phosphane and bis(phosphane) ligands from phosphinic acids

International audienceThe Boyd-Regan methodology allowed for access to various cyclic or benzylic mono- and bis(phosphinic acids) 1-6. The reduction of monophosphinic acids to secondary phosphanes 7-9 was achieved with silanes. On the other hand, reduction of the bis(phosphinic acids) with LiAlH4 led to bis(phosphanes) 12-13. Various cyclic phosphanes and bis(phosphanes) were obtained by the alkylation of these secondary phosphanes (as their borane adducts). The Michael addition of the same borane adducts to vinylic phosphonates led to phosphane-phosphonates which could be hydrolysed to new hydrosoluble phosphanes