Unexpected influence of mono-phenyl substitution on the photochemistry of β,γ-unsaturated oxime acetates
作者:Diego Armesto、Antonia R. Agarrabeitia、William M. Horspool、Mar G. Gallego
DOI:10.1039/c39900000934
日期:——
On irradiation the oxime acetate of trans-2,2-dimethyl-4-phenylbut-3-enal (5) undergoes stereospecific aza-di-π-methane rearrangement to the oxime acetate of trans-2,2-dimethyl-3-phenylcyclopropanecarbaldehyde (7), while surprisingly the irradiation of the oxime acetate of 2,2-dimethyl-3-phenylbut-3-enal (10) follows a different reaction path and affords the oxime acetate of 4-methyl-3-phenylpent-3-enal
在辐射下,反式-2,2-二甲基-4-苯基丁-3-烯醛的肟肟(5)发生立体定向的氮杂-二-π-甲烷重排为反式-2,2-二甲基-3-苯基环丙烷甲醛的肟肟。(7),令人惊讶地,对2,2-二甲基-3-苯基丁-3-烯醛的肟肟的辐射(10)遵循不同的反应路径,并提供了4-甲基-3-苯基戊-3-乙酸肟酯。通过新的1,3迁移途径致死(13)。