作者:B. Büyükkıdan、S. Bilgiç、O. Bilgiç
DOI:10.1081/scc-100104015
日期:2001.1.1
obtained in 58% yield. With 2-, 3- and 4-methylstyrenes, 2-(2′-,3′- and 4′-methylphenyl)-6,7-dimethyl-chromans (7,R = 2-, 3- and 4-CH3) were obtained in 21.7, 25, and 38% yields, respectively. With 2-,3- and 4-chlorostyrenes, 2-(2′-,3′-and 4′-chlorophenyl)-6,7-dimethyl-chromans (7, R = 2-, 3, and 4-Cl) were obtained in 16, 20, and 28.5% yields, respectively. With 4-bromostyrene, 2-(4′-bromophenyl)-6,7-dimethyl-chroman
研究了 2-N,N-二甲基氨基甲基-3,4-二甲基-苯酚 (5) 与苯乙烯和取代苯乙烯的反电子要求 Diels-Alder 反应。使用苯乙烯以 58% 的产率获得 2-苯基-6,7-二甲基色满 (7,R = H)。对于 2-、3- 和 4- 甲基苯乙烯,2-(2'-,3'- 和 4'-甲基苯基)-6,7-二甲基色满 (7,R = 2-, 3- 和 4-CH3)分别以 21.7、25 和 38% 的产率获得。对于 2-,3- 和 4-氯苯乙烯,2-(2'-,3'-和 4'-氯苯基)-6,7-二甲基色满 (7, R = 2-, 3, 和 4-Cl)分别以 16、20 和 28.5% 的产率获得。使用 4-溴苯乙烯,2-(4'-溴苯基)-6,7-二甲基色满 (7,R = 4-Br 以 35% 的产率获得。在所有热解中都没有遇到醌-甲基二聚体 (8)。