{"id":31461,"date":"2020-06-02T08:00:44","date_gmt":"2020-06-02T00:00:44","guid":{"rendered":"\/\/www.gsbet888.com\/?p=31461"},"modified":"2020-05-26T06:19:14","modified_gmt":"2020-05-25T22:19:14","slug":"%e5%a4%a7%e5%ae%ae-%e5%af%9b%e4%b9%85-hirohisa-ohmiya","status":"publish","type":"post","link":"\/\/www.gsbet888.com\/chemists\/%e4%b8%96%e7%95%8c%e9%9d%92%e5%b9%b4%e5%8c%96%e5%ad%a6%e5%ae%b6\/2020\/06\/%e5%a4%a7%e5%ae%ae-%e5%af%9b%e4%b9%85-hirohisa-ohmiya.html","title":{"rendered":"\u5927\u5bae \u5bdb\u4e45 Hirohisa Ohmiya"},"content":{"rendered":"
\u672c\u6587\u4f5c\u8005\uff1aalberto-caeiro<\/p>\n
\u5927\u5bae \u5bdb\u4e45[1]<\/sup>\uff08Hirohisa Ohmiya\uff09\uff0c\u65e5\u672c\u6709\u673a\u5316\u5b66\u5bb6\uff0c\u91d1\u6ca2\u5927\u5b66\u533b\u85ac\u4fdd\u5065\u7814\u7a76\u57df\uff0c\u85ac\u5b66\u7cfb\u6559\u6388\u3002\u56fe\u7247\uff1a\u5b9e\u9a8c\u5ba4\u4ecb\u7ecd<\/a>\u3002<\/p>\n 1. N<\/em><\/strong>–<\/em><\/strong>h<\/em><\/strong>eterocyclic<\/em><\/strong> carbene-<\/em><\/strong>based<\/em><\/strong> (radical) organocatalys<\/em><\/strong>is<\/em><\/strong><\/span><\/p>\n Ohmiya\u6559\u6388\u5c06NHC\u50ac\u5316\u53cd\u5e94\u548c\u91d1\u5c5e\u50ac\u5316\u7684\u70ef\u4e19\u57fa\u53d6\u4ee3\u53cd\u5e94\u7ed3\u5408\uff0c\u5e95\u7269\u919b\u4e0e\u5c0f\u5206\u5b50\u50ac\u5316\u5242NHC\u53cd\u5e94\u751f\u6210\u7684Breslow\u4e2d\u95f4\u4f53\u4e0e\u70ef\u4e19\u57fa\u91d1\u5c5e\u590d\u5408\u7269\u53d1\u751f\u70ef\u4e19\u57fa\u53d6\u4ee3\u53cd\u5e94\uff0c\u5f97\u5230\u03b2,\u03b3-\u4e0d\u9971\u548c\u916e\u7c7b\u5316\u5408\u7269[2]<\/sup>\u3002<\/p>\n \u800c\u5728\u81ea\u7531\u57fa\u8fc7\u7a0b\u4e2d\uff0c\u751f\u6210\u7684Breslow\u4e2d\u95f4\u4f53\u53bb\u8d28\u5b50\u540e\uff0c\u4e0e\u90bb\u82ef\u4e8c\u7532\u9170\u4e9a\u80fa\u916f\u53d1\u751f\u7535\u5b50\u8f6c\u79fb\uff0c\u751f\u6210\u6b63\u79bb\u5b50\u81ea\u7531\u57fa\u4e0e\u8131\u7fa7\u540e\u751f\u6210\u7684\u70f7\u57fa\u81ea\u7531\u57fa\u7ed3\u5408\u5f97\u5230\u539f\u6599\u919b\u70f7\u57fa\u5316\u7684\u916e\u4ea7\u7269[3a]<\/sup>\u3002\u6b64\u5916\uff0c\u8be5\u53cd\u5e94\u4f53\u7cfb\u4e2d\u53ef\u52a0\u5165\u70ef\u70c3\uff0c\u5f97\u5230\u63d2\u70ef\u70f7\u57fa\u5316\u4ea7\u7269[3b]<\/sup>\u3002<\/p>\n NHC-based (radical) organocatalysis<\/em><\/p>\n Reaction mechanisms: left: NHC\/Pd hybrid catalysis; right: NHC radical catalysis<\/em><\/p>\n 2. Reductive umpolung of aldehydes <\/em><\/strong><\/span><\/p>\n Ohmiya\u6559\u6388\u5c06\u7845\u57fa\u94dc\u5bf9\u919b\u52a0\u6210\u53cd\u5e94\u548c[1,2]-Brook\u91cd\u6392\u53cd\u5e94\u7ed3\u5408\u8d77\u6765\uff0c\u5b9e\u73b0\u4e86\u919b\u7684\u6781\u6027\u53cd\u8f6c\uff0c\u5f62\u6210\u7684\u70f7\u57fa\u94dc\u7269\u79cd\u53ef\u76f4\u63a5\u8fdb\u653b\u916e\uff0c\u4e9a\u80fa\u751f\u6210\u624b\u6027\u90bb\u4e8c\u9187[4a]<\/sup>\u548c\u03b1-\u6c28\u57fa\u9187[4b]<\/sup>\uff0c\u4e5f\u53ef\u4e0e\u53d1\u751f\u8f6c\u91d1\u5c5e\uff0c\u5b9e\u73b0\u919b\u7684\u82b3\u57fa\u52a0\u6210\u53cd\u5e94\u5f97\u5230\u624b\u6027\u9187[4c,d]<\/sup>\u3002<\/p>\n Reductive umpolung of aldehydes<\/em><\/p>\n\u7ecf\u5386<\/strong><\/h4>\n
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