Bis(μ-diethyl­phosphido-κ2 P:P)bis­[bis(2,4,6-trimethyl­phen­yl)indium(III)]

The title compound, [In2(C9H11)4(C4H10P)2], contains a centrosymmetric In2P2 core with short inter­molecular In—P bonds. This core has acute P—In—P and obtuse In—P—In bond angles compared with other [R 2InPR′2]2 analogues, due to the presence of the bulky aromatic substituents on the In atom and the non-sterically demanding ethyl substituents on the P atom

Ethyl 6-methyl-4-[2-(4,4,5,5-tetra­methyl-1,3,2-dioxaborolan-2-yl)thio­phen-3-yl]-2-thioxo-1,2,3,4-tetra­hydro­pyrimidine-5-carboxyl­ate

A new Biginelli compound, C18H25BN2O4S2, containing a boronate ester group was synthesized from a lithium bromide-catalysed reaction. The compound crystallizes with two independent mol­ecules in the asymmetric unit that differ mainly in the conformation of the ester functionality. The crystal structure is stabilized by inter­molecular N—H⋯O and N—H⋯S hydrogen bonds involving the 3,4-dihydro­pyrimidine-2(1H)-thione NH groups as donors and the carbonyl O and thio­phene S atoms as acceptors

The first oxazoline adduct of Zn(acac)2: bis­(acetyl­acetonato-κ2 O,O′)(2-phenyl-2-oxazoline-κN)zinc(II)

The title material, [Zn(C5H7O2)2(C9H9NO)], was synthesized by the treatment of bis­(acetyl­acetonato)zinc(II) monohydrate with 2-phenyl-2-oxazoline. The Zn atom is coordinated by two chelating acetyl­acetonate groups and one oxazoline ligand in the apical position of a slightly distorted square-pyramidal metal–ligand geometry

One-pot Selective Formylation and Claisen Rearrangement on Calix[4]arenes

A versatile synthon with formyl and allyl groups at the upper rim of calix[4]arene has been synthesized in two steps. Selective formylation of 25,27-diallyloxy-26,28-dihydroxycalix[4]arene, along with the Claisen rearrangement of the allyl groups, was achieved by reaction with hexamethylenetetraamine (hexamine) in glacial acetic acid. A control reaction of the dipropyl analogue shows that the selective formylation takes place independently of the Claisen rearrangement. The crystal structure of the dimethylacetal derivative of 5,17-diformyl-11,23-diallylcalix[4]arene is reported