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Carbene Complexes with Quinone Bisketal Functions
Author(s) -
Dötz Karl Heinz,
Popall Michael,
Müller Gerhard,
Ackermann Klaus
Publication year - 1986
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198609111
Subject(s) - carbene , quinone , chemistry , naphthoquinone , chromium , annulation , derivative (finance) , medicinal chemistry , trace (psycholinguistics) , photochemistry , stereochemistry , organic chemistry , catalysis , philosophy , financial economics , economics , linguistics
The vinylogous‐stabilized carbene complexes 2 (M Cr, W) are formed by successive reaction of the naphthoquinone bisketal 1 with t BuLi, M(CO) 6 , and a trace of acid. In the case of the simpler 1,4‐benzoquinone derivative, it is possible to prepare the carbene‐chromium complex 3 , which, as exprected, can undergo annelation with alkynes to form the B/C rings of anthracyclinones.