Premium
A Cyclic (Alkyl)(boryl)germylene Derived from a Cyclic (Alkyl)(amino)germylene
Author(s) -
Rao Bin,
Kinjo Rei
Publication year - 2019
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201910933
Subject(s) - chemistry , alkyl , adduct , yield (engineering) , lewis acids and bases , medicinal chemistry , potassium , ring (chemistry) , derivative (finance) , stereochemistry , organic chemistry , catalysis , materials science , economics , financial economics , metallurgy
A cyclic (alkyl)(amino)germylene undergoes a ring expansion reaction with dibromomesitylborane (MesBBr 2 ) to afford a six‐membered dibromogermane derivative. In the presence of Lewis bases (PMe 3 or Me NHC), reduction of the latter with two equivalents of potassium graphite (KC 8 ) gives rise to cyclic (alkyl)(boryl)germylene–Lewis base adducts. Upon heating, the germylene—PMe 3 adduct reacts with H 2 to yield a germane, probably via a base‐free germylene featuring a small HOMO–LUMO gap.