Cyclisation of Aminyl Radicals Derived from Amino Acids
摘要:
alpha-Amino acid aminyl radicals have been generated from sulfenamide precursors using Bu3SnH. The aminyl radicals undergo 5-exo-trig cyclisation reactions onto suitably placed N-alkenyl or alpha-alkenyl chains on the amino acids with reasonable diastereoselectivity. The alpha-ester of the amino acid imparts electrophilic behaviour to the aminyl radicals and facilitates cyclisation onto alkenes. (C) 1997 Elsevier Science Ltd.
Cyclisation of Aminyl Radicals Derived from Amino Acids
摘要:
alpha-Amino acid aminyl radicals have been generated from sulfenamide precursors using Bu3SnH. The aminyl radicals undergo 5-exo-trig cyclisation reactions onto suitably placed N-alkenyl or alpha-alkenyl chains on the amino acids with reasonable diastereoselectivity. The alpha-ester of the amino acid imparts electrophilic behaviour to the aminyl radicals and facilitates cyclisation onto alkenes. (C) 1997 Elsevier Science Ltd.
MULTI-METALLIC ORGANOMETALLIC COMPLEXES, AND RELATED POLYMERS, COMPOSITIONS, METHODS AND SYSTEMS
申请人:RADLAUER Madalyn
公开号:US20130066029A1
公开(公告)日:2013-03-14
Multi-metallic organometallic complexes that allow performance of olefin based reaction and in particular polymerization of olefins to produce polyolefin polymers, and related methods and systems are described.
[EN] MULTI-METALLIC ORGANOMETALLIC COMPLEXES, AND RELATED POLYMERS, COMPOSITIONS, METHODS AND SYSTEMS<br/>[FR] COMPLEXES ORGANOMÉTALLIQUES À PLUSIEURS MÉTAUX, ET POLYMÈRES, COMPOSITIONS, PROCÉDÉS ET SYSTÈMES CORRESPONDANTS
申请人:CALIFORNIA INST OF TECHN
公开号:WO2013040276A1
公开(公告)日:2013-03-21
Multi-metallic organometallic complexes that allow performance of olefin based reaction and in particular polymerization of olefins to produce polyolefin polymers, and related methods and systems are described.
Cyclisation of Aminyl Radicals Derived from Amino Acids
作者:W.Russell Bowman、Michael J Broadhurst、Daniel R Coghlan、Kirk A Lewis
DOI:10.1016/s0040-4039(97)01413-5
日期:1997.9
alpha-Amino acid aminyl radicals have been generated from sulfenamide precursors using Bu3SnH. The aminyl radicals undergo 5-exo-trig cyclisation reactions onto suitably placed N-alkenyl or alpha-alkenyl chains on the amino acids with reasonable diastereoselectivity. The alpha-ester of the amino acid imparts electrophilic behaviour to the aminyl radicals and facilitates cyclisation onto alkenes. (C) 1997 Elsevier Science Ltd.