Ring-opening reactions of 3-substituted 1-azabicyclo[1.1.0]butane with dichlorocarbene
作者:Grzegorz Mlostoń、Alberto Galindo、Romuald Bartnik、Alan R. Marchand、D. Rajagopal
DOI:10.1002/jhet.5570330116
日期:1996.1
also was characterized via conversion to a tetrazole derivative, i.e., 5b. Finally, the reaction of 1b with dichlorocarbene generated under phase transfer conditions (chloroform-sodium hydroxide-TEBA) was studied. At short reaction times (0.5 hour), the major reaction product was 4b. However, at longer reaction times (20–30 hours), two secondary products, 8 and 9, were formed which resulted via subsequent
3-乙基-1-氮杂双环[1.1.0]丁烷(1a)与氯仿-叔丁醇钾反应,得到开环产物1,1-二氯-2-氮杂-4-乙基戊-1,4-二烯(图4a),其特点通过转化为相应的ñ取代5-氯-1,2,3,4-四唑,萨。3-苯基-1-氮杂双环-[1.1.0]丁烷(1b)与“塞弗斯试剂”(PhHgCCl 2 Br)反应,得到1,1-二氯-2-氮杂-4-苯基-4-苯基戊-1,4-二烯(4b),其也通过转化为四唑衍生物即5b来表征。最后1b的反应研究了在相转移条件下生成的二氯卡宾(氯仿-氢氧化钠-TEBA)。在短反应时间(0.5小时)下,主要反应产物为4b。但是,在更长的反应时间(20-30小时)中,形成了两个副产物8和9,这是由随后的4b的二氯环丙烷化产生的。