{"id":34088,"date":"2020-08-02T16:39:15","date_gmt":"2020-08-02T08:39:15","guid":{"rendered":"\/\/www.gsbet888.com\/?p=34088"},"modified":"2020-08-02T16:53:27","modified_gmt":"2020-08-02T08:53:27","slug":"kihara-%e5%90%b2%e5%93%9a%e5%90%88%e6%88%90","status":"publish","type":"post","link":"\/\/www.gsbet888.com\/reactions\/2020\/08\/kihara-%e5%90%b2%e5%93%9a%e5%90%88%e6%88%90.html","title":{"rendered":"Kihara \u5432\u54da\u5408\u6210"},"content":{"rendered":"
Kihara\u5432\u54da\u5408\u6210 (Kihara indole synthesis)\u662f\u901a\u8fc7\u5f3a\u78b1(\u6b63\u4e01\u57fa\u9502)\u6761\u4ef6\u4e0b\u539f\u4f4d\u751f\u6210\u7684\u82b3\u57fa\u9502\u8bd5\u5242\u8fdb\u884c\u7684\u5206\u5b50\u5185Barbier\u53cd\u5e94\uff0c\u8fdb\u800c\u5b8c\u6210\u76841-\u7532\u57fa-3-\u82b3\u57fa\u5432\u54da\u4e0e1-\u7532\u57fa-3-\u70f7\u57fa\u5432\u54da\u53ca1-\u7532\u57fa-3-\u70f7\u57fa-3-\u7f9f\u57fa\u5432\u54da\u7684\u5408\u6210[1]<\/sup>\u3002\u8be5\u53cd\u5e94\u7531\u65e5\u672cTokushima\u5927\u5b66\u836f\u5b66\u90e8\u7684Kihara (\u6728\u539f \u52dd, \u5fb3\u5cf6\u5927\u5b66\u85ac\u5b66\u90e8, Kihara Masaru, Faculty of Pharmaceutical Sciences, The University of Tokushima) \u57281995\u5e74\u9996\u6b21\u62a5\u9053\u3002\u8be5\u65b9\u6cd5\u5b66\u539f\u6599\u6613\u5f97\uff0c\u4ea7\u7387\u4e2d\u7b49\uff0c\u4e3a1-\u7532\u57fa-3-\u82b3\u57fa\u5432\u54da\u4e0e1-\u7532\u57fa-3-\u70f7\u57fa\u5432\u54da\u53ca1-\u7532\u57fa-3-\u70f7\u57fa-3-\u7f9f\u57fa\u5432\u54da\u7684\u5408\u6210\u5f00\u8f9f\u4e86\u65b0\u7684\u9014\u5f84\u3002<\/p>\n 1-\u7532\u57fa-3-\u82b3\u57fa\u5432\u54da\u7684\u5408\u6210[1]<\/sup><\/p>\n 1-\u7532\u57fa-3-\u70f7\u57fa\u5432\u54da\u7684\u5408\u6210[1]<\/sup><\/p>\n 1-\u7532\u57fa-3-\u70f7\u57fa-3-\u7f9f\u57fa\u5432\u54da\u7684\u5408\u6210[1]<\/sup><\/p>\n 1. Kihara<\/strong>\u5432\u54da\u5408\u6210<\/strong><\/span><\/p>\n \u5728-78 o<\/sup>C\uff0c\u6c2e\u6c14\u6c14\u6c1b\u4e0b\uff0c\u5c06\u6b63\u4e01\u57fa\u9502 (l.6 M \u6b63\u5df1\u70f7\u6eb6\u6db2\uff0c1.2 eq.)\u7f13\u6162\u6ef4\u52a0\u81f3N<\/em>-(2-\u7898\u82ef\u57fa)-N<\/em>-\u7532\u6c28\u57fa\u7532\u57fa\u916e (1 eq.)\u7684\u65e0\u6c34\u56db\u6c22\u544b\u5583\u6eb6\u6db2 (\u5e95\u7269\u6d53\u5ea6\u4e3a0.11 M)\u4e2d\u3002\u7ef4\u6301-78 o<\/sup>C\uff0c\u5c06\u4e0a\u8ff0\u53cd\u5e94\u6df7\u5408\u7269\u6405\u62cc15 min\u300215 min\u540e\uff0c\u52a0\u5165\u6c34\u6dec\u706d\u53cd\u5e94\u3002\u6dec\u706d\u5b8c\u6210\u540e\uff0c\u518d\u52a0\u5165\u4e59\u919a\u8fdb\u884c\u8403\u53d6\u3002\u5c06\u5408\u5e76\u7684\u6709\u673a\u76f8\u901a\u8fc7\u65e0\u6c34\u786b\u9178\u9541\u5e72\u71e5\u540e\uff0c\u51cf\u538b\u9664\u53bb\u6eb6\u5242\u3002\u7c97\u4ea7\u7269\u9996\u5148\u901a\u8fc7\u7845\u80f6\u5feb\u901f\u67f1\u8272\u8c31 (DCM\u4f5c\u4e3a\u6d17\u8131\u5242)\u5206\u79bb\u51fa\u76f8\u5e941-\u7532\u57fa-3-\u70f7\u57fa-3-\u7f9f\u57fa\u5432\u54da\u7ec4\u5206\uff0c\u968f\u540e\u5c06\u8be5\u7ec4\u5206\u7ee7\u7eed\u901a\u8fc7\u7845\u80f6\u5feb\u901f\u67f1\u8272\u8c31 (DCM\/\u6b63\u5df1\u70f7 1:1v\/v \u4f5c\u4e3a\u6d17\u8131\u5242)\u8fdb\u884c\u7eaf\u5316\uff0c\u83b7\u5f97\u76f8\u5e94\u5432\u54da\u4ea7\u7269\u3002<\/p>\n 2. \u5728<\/strong>HCl\/Et2<\/sub>O<\/strong>\u6761\u4ef6\u4e0b\u7684\u8131\u6c34<\/strong><\/span><\/p>\n \u54111-\u7532\u57fa-3-\u70f7\u57fa-3-\u7f9f\u57fa\u5432\u54da\u62161-\u7532\u57fa-3-\u82ef\u57fa-3-\u7f9f\u57fa\u5432\u54da\u7684\u4e59\u919a\u6eb6\u6db2\u4e2d\u52a0\u5165\u9002\u91cf5% HCl\u6eb6\u6db2\u3002\u518d\u5c06\u4e0a\u8ff0\u6df7\u5408\u7269\u5728\u5ba4\u6e29\u4e0b\u6405\u62cc10 min\u3002\u4e4b\u540e\uff0c\u52a0\u5165\u9002\u91cf10% KOH\u8fdb\u884c\u4e2d\u548c\uff0c\u968f\u540e\uff0c\u52a0\u5165DCM\u8fdb\u884c\u8403\u53d6\u3002\u5c06\u5408\u5e76\u7684\u6709\u673a\u76f8\u52a0\u6c34\u6d17\u6da4\uff0c\u518d\u901a\u8fc7\u65e0\u6c34\u786b\u9178\u9541\u8fdb\u884c\u5e72\u71e5\u3002\u51cf\u538b\u9664\u53bb\u6eb6\u5242\u540e\uff0c\u83b7\u5f97\u76f8\u5e94\u5432\u54da\u4ea7\u7269\u3002<\/p>\n<\/a><\/p>\n
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\u53cd\u5e94\u673a\u7406<\/strong><\/h4>\n
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