Intramolecular (2+2) photocycloaddition of 2-(N-acyl-N-(2-propenyl)-amino)cyclohex-2-enones: Synthesis of 2-azabicyclo(2.1.1)hexanes.
作者:MASAZUMI IKEDA、TAKAMASA UCHINO、MASAMI TAKAHASHI、HIROYUKI ISHIBASHI、YASUMITSU TAMURA、MASARU KIDO
DOI:10.1248/cpb.33.3279
日期:——
Photoirradiation of 2-[N-acyl-N-(2-propenyl) amino] cyclohex-2-enones gave the 9-acyl-9-azatricyclo [5.2.1.01.6] decan-2-ones as the major products. In some cases, 1-acetyl-1, 4, 4a, 5, 6, 7, 8, 8a-octahydroquinol-8-one, 1-benzoyl-3-vinyl-2, 3, 3a, 4, 5, 6, 7, 7a-octahydroindol-7-one, and 1-(2-propenyl)-1-azaspiro [3.5] nonane-2, 5-dione were isolated and characterized as minor products.
2-[N-酰基-N-(2-丙烯基)氨基]环己-2-烯酮的光照射反应生成了9-酰基-9-氮杂三环[5.2.1.0¹.⁶]十烯-2-酮作为主要产物。在某些情况下,还分离和表征了1-乙酰基-1, 4, 4a, 5, 6, 7, 8, 8a-八氢喹啉-8-酮、1-苯甲酰基-3-乙烯基-2, 3, 3a, 4, 5, 6, 7, 7a-八氢吲哚-7-酮以及1-(2-丙烯基)-1-氮杂螺 [3.5] 非烷-2, 5-二酮作为次要产物。