Reaction of Derivatives of the [2+2]-Cycloadduct of Dichloroketene and Dimethylfulvene with Ozone
作者:Z. R. Valiullina、N. A. Ivanova、M. S. Miftakhov
DOI:10.1134/s1070428024020180
日期:2024.2
Abstract Previously unknown optically active cyclopentenones were synthesized by the ozonation of 2-dichloromethyl-5-(1-methylethylidene)-N-[(1R)-1-phenylethyl]cyclopent-3-ene-1-carboxamide in CH2Cl2–MeOH (10 : 1) at 0°C and of (3aR,6aR)-3-hydroxy-6-(1-methylethylidene)-2-[(1R)-1-phenylethyl)-3,3a,6,6a-tetrahydrocyclopenta[c]pyrrol-1(2H)-one in cyclohexane–MeOH (10 : 1) at 5°C until complete consumption
摘要 以前未知的光学活性环戊烯酮是通过 2-二氯甲基-5-(1-甲基亚乙基)-N - [(1R ) -1-苯乙基]环戊-3-烯-1-甲酰胺在 CH 2 Cl 2中的臭氧化合成的0°C 下的 MeOH (10 : 1) 和 (3 aR ,6 aR )-3-羟基-6-(1-甲基亚乙基)-2-[(1 R )-1-苯乙基)-3,3 a, 6,6 a -四氢环戊[ c ]吡咯-1(2 H )-酮在环己烷-MeOH (10 : 1) 中于 5°C 直至起始化合物完全消耗(通过 TLC),然后用 Me 2 S处理新获得的环戊烯:2-(二氯甲基)-5-氧代-N -[(1R ) -1-苯乙基]环戊-3-烯-1-甲酰胺和(3aR , 6aR ) -3-羟基- 2-[(1R ) -1-苯乙基]-2,3,3a,6a-四氢环戊[ c ]吡咯-1,6-二酮是制备环戊烷类化合物的有用化合物。