Radical cyclizations of N-vinylic α-chloroacetamides. 5-endo-trig and 4-exo-trig cyclizations
摘要:
Bu3SnH mediated radical cyclizations of N-vinylic alpha-chloroacetamides proceeded in a "disfavored" 5-endo-trig manner to give five-membered lactams. Some exceptions where the 4-exo cyclization predominates are also described.
Bu3SnH mediated radical cyclizations of N-vinylic alpha-chloroacetamides proceeded in a "disfavored" 5-endo-trig manner to give five-membered lactams. Some exceptions where the 4-exo cyclization predominates are also described.