The novel acid-catalysed reaction of isopropenyl ether with tertiary acetylenic carbinols to give β-ketoallenes in high yields is described. Upon treatment with bases, these allenes readily undergo isomerization to conjugated dienones. This reaction sequence results in an economic synthesis of pseudo-ionones and pseudo-irones from dehydrolinalool and its homologs.
描述了异
丙烯基醚与炔属
叔丁醇的新型酸催化反应,以高收率得到β-酮基烯丙基。用碱处理后,这些人就容易进行异构化成共轭二烯酮。该反应序列导致由
脱氢芳樟醇及其同系物经济地合成
假紫罗兰酮和假熨斗。