Photocycloaddition reactions of the first stable thioaldehyde: 2,4,6-tri(tert-butyl)thiobenzaldehyde with substituted allenes
作者:G. Hofstra、J. Kamphuis、H.J.T. Bos
DOI:10.1016/s0040-4039(01)80050-2
日期:1984.1
Irradiation of 2,4,6-tri-(tert,-butyl)thiobenzaldehyde 1 with some alkoxy-, alkylthio-, and phenyl-allenes 2 a-i gave one stereoisomer of a (2+2)-cycloadduct, viz. thietane 3 in high yields (75–95%). Ringclosure is in agreement with MNDO-calculations.