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Contribution to the Chemistry of Boron, 238 Synthesis and Assembly Mechanism for Spirocyclic Cage Compounds Containing, B, P and Si Atoms
Author(s) -
Chen Tuqiang,
Duesler Eileen N.,
Paine Robert T.,
Nöth Heinrich
Publication year - 1997
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19971300719
Subject(s) - chemistry , dehydrohalogenation , cage , boron , stereochemistry , carborane , crystallography , medicinal chemistry , organic chemistry , catalysis , mathematics , combinatorics
Reactions of 1‐lithio · DME‐2,4‐bis(dialkylamino)‐l,3,2,4‐diphosphadiboretanes ( 1a, 1b ) with SiCl 4 followed by dehydrohalogenation with t BuLi produce spirocyclic compounds [(R 2 NB) 2 P 2 ] 2 Si ( 2a, 2b ). The compounds have been characterized by spectroscopic methods and X‐ray crystallography. The assembly process has also been followed and one intermediate species [( i Pr 2 NB) 2 P 2 ][( i Pr 2 NB)P(H)( i Pr 2 NB)P]SiCl ( 3 ) has been isolated and fully characterized.