Targeted synthesis of 2,3-disubstituted 2-phospholenes using catalytic cycloalumination of acetylenes
摘要:
A preparative one-pot method for the synthesis of 2,3-dialkyl-substituted phosphol-2-enes by catalytic cycloalumination of symmetric acetylenes with AlEt3 catalyzed by Cp2ZrCl2 is developed. The reaction gives the corresponding aluminacyclopentenes, which then react in situ with phosphorus dihalides. (C) 2014 Elsevier Ltd. All rights reserved.
Synthesis of substituted 2,3-dihydro-1H-boroles by transmetalation of aluminacyclopent-2-enes with BF3·Et2O
摘要:
A procedure was developed for selective synthesis of 4,5-dialkyl-1-fluoro-2,3-dihydro-1H-boroles via transmetalation of the corresponding aluminacyclopent-2-enes with BF3 center dot Et2O. 4,5-Dialkyl-1-fluoro-2,3-dihydro-1H-boroles were isolated as complexes with BEtF2. 4-Alkyl-5-dimethylaminomethyl-1-fluoro-2,3-dihydro-1H-boroles were synthesized for the first time.
Synthesis of halogen-substituted borolanes and 2,3-dihydro-1H-boroles by reactions of aluminacarbocycles with boron trichloride and boron tribromide
作者:L. I. Khusainova、L. O. Khafizova、T. V. Tyumkina、U. M. Dzhemilev
DOI:10.1134/s1070428014030014
日期:2014.3
A selective procedure has been developed for the synthesis of 1-chloro(bromo)-substituted borolanes and 2,3-dihydro-1H-boroles by reaction of aluminacarbocycles with boron trihalides BX3 (X = Cl, Br). 3-Substituted 1-chloro(bromo)borolanes and 2,3-dihydro-1H-boroles have been isolated as individual substances, and their structure has been determined.