首页> 外文期刊>Tetrahedron letters: The International Journal for the Rapid Publication of Preliminary Communications in Organic Chemistry >1,3-Bis(phenylmercapto)propane and 1-chloro-3-(phenylmercapto)propane: useful precursors for 1,3-dilithiopropane synthons in the preparation of 1,5-diols
【24h】

1,3-Bis(phenylmercapto)propane and 1-chloro-3-(phenylmercapto)propane: useful precursors for 1,3-dilithiopropane synthons in the preparation of 1,5-diols

机译:1,3-双(苯基巯基)丙烷和1-氯-3-(苯基巯基)丙烷:1,3-二苯硫基丙烷合成子在制备1,5-二醇中的有用前体

获取原文
获取原文并翻译 | 示例
           

摘要

Treatment of 1,3-bis(phenylmercapto)propane (1) with an excess of lithium and a catalytic amount of DTBB (3.5 mol%) at -78deg C followed by reaction with a carbonyl compound [~tBuCHO, PhCHO, (PhCH_2)_2CO, Et_2CO, (CH_2)_5CO, (CH_2)_7CO, (-)-menthone, Ph_2CO] leads, after hydrolysis with water, to symmetrically substituted 1,5-diols (2). Starting from 1-chloro-3-(phenylmercapto)propane (3) and by successive treatment with: (a) lithium-naphthalene at -78deg C; (b) a carbonyl compound {Me_2CO, (CH_2)_5CO, (CH_2)_7CO, (-)-menthone, [CH_3(CH_2)_4]_2CO} at the same temperature; (c) lithium powder at -50deg C; and (d) a second carbonyl compound [~tBuCHO, PhCHO] at the same temperature and final hydrolysis with water yields unsymmetrically substituted 1,5-diols (4).
机译:在-78°C下用过量的锂和催化量的DTBB(3.5 mol%)处理1,3-双(苯巯基)丙烷(1),然后与羰基化合物[〜tBuCHO,PhCHO,(PhCH_2)用水水解后,_2CO,Et_2CO,(CH_2)_5CO,(CH_2)_7CO,(-)-薄荷酮,Ph_2CO]导致对称取代的1,5-二醇(2)。从1-氯-3-(苯基巯基)丙烷(3)开始,并依次用下列物质处理:(a)-萘锂在-78℃; (b)在相同温度下的羰基化合物{Me_2CO,(CH_2)_5CO,(CH_2)_7CO,(-)-薄荷酮,[CH_3(CH_2)_4] _2CO}; (c)-50℃的锂粉; (d)第二种羰基化合物[〜tBuCHO,PhCHO],在相同的温度下并用水最终水解,得到不对称取代的1,5-二醇(4)。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号