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
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.
A facile method for the N-alkylation of α-amino esters