A One-Pot Umpolung Method for Preparation of α-Aryl Nitriles from α-Chloro Aldoximes via Organocuprate Additions to Transient Nitrosoalkenes
摘要:
Conjugate addition of a variety of aryl lithiocyanocuprates to nitrosoalkenes generated from alpha-chloro aldoximes, followed by in situ dehydration of the crude alpha-aryl aldoxime product with N,N'-dicyclohexylcarbodiimide, affords alpha-aryl nitriles in good overall yields via a one-pot protocol.
Pyrimidine derivatives as modulators of insulin-like growth factor-1 receptor (igf-i)
申请人:Barlaam Bernard
公开号:US20050054638A1
公开(公告)日:2005-03-10
The invention provides compounds of formula
in which R
1
, R
2
, R
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have the meanings defined in the specification; processes for the preparation; pharmaceutical compositions containing them; a process for preparing the pharmaceutical compositions; and their use in therapy.
The invention provides compounds of formula
in which R
1
, R
2
, R
3
and R
4
have the meanings defined in the specification; processes for their preparation; pharmaceutical compositions containing them; a process for preparing the pharmaceutical compositions; and their use in therapy.