Synthesis,<sup>1</sup>H- and<sup>13</sup>C-NMR spectra, crystal structure and ring openings of 1-methyl-6,9-epoxy-9-aryl-5,6,9,10-tetrahydro-1<i>H</i>-imidazo [3,2-<i>e</i>] [2<i>H</i>-1,5] oxazocinium methanesulfonate
作者:Subhash P. Upadhyaya、Frank S. Davis、Jae Jeong Lee、Kyaw Zaw、Ludwig Bauer、Norman E. Heimer
DOI:10.1002/jhet.5570340537
日期:1997.9
The reaction of methanesulfonyl chloride with cis-1 formed the corresponding methanesulfonates, cis-4, which rapidly cyclized to the title compounds 5. Base-catalyzed ring opening of 5 furnished 1-methyl-5,6-dihydro-6-hydroxymethyl-8-(4-chloro- and 2,4-dichlorophenyl)-1H-imidazo[3,2-d][1,4]oxazepinium methanesulfonates 7. Acid-catalyzed hydrolyses of 5 or 7 provided 1-methyl-2-[(4-chloro- and 2,4
甲磺酸催化1-(4-氯-和2,4-二氯苯基)-2-(1-甲基-2-咪唑-唑基)乙酮1a和1b与甘油的反应生成顺式和反式-2-卤代芳基-2-[((1-甲基-2-咪唑基)甲基] -4-羟甲基} -1,3-二氧戊环2a和2b,顺式/反比为2:1 。除了这些五元缩酮以外,1a与甘油的反应还产生了少量的反式-2-(4-氯苯基)-2-[(1-甲基-2-咪唑基)甲基] -5-羟基} -1 ,3-二恶烷(3a,7%)。甲磺酰氯与顺式反应-1形成相应的甲磺酸盐,cis - 4,其迅速环化为标题化合物5。5个配位的1-甲基-5,6-二氢-6-羟甲基-8-(4-氯-和2,4-二氯苯基)-1 H-咪唑并[3,2- d ] [1]的碱催化开环,4]甲氮杂氧杂pin鎓7。5或7的酸催化水解提供了1-甲基-2-[(4-氯-和2,4-二氯)苯甲酰基] -3-[(2,3-二羟基)-1-丙基]咪唑鎓盐12。结构证明基于广泛的1