Synthesis of 2-alkylidene-3,3-dialkyl-1,4-dithianes and their oxathiane analogues by 1,2-sulphur migration

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作者
Barros, MT [1 ]
Maycock, CD
Santos, LS
机构
[1] Univ Nova Lisboa, Fac Ciencias & Tecnol, Dept Quim, P-2825 Monte De Caparica, Portugal
[2] Univ Nova Lisboa, Inst Tecnol Quim & Biol, P-2780 Oeiras, Portugal
[3] Univ Porto, Fac Engn, Dept Engn Quim, P-4099 Porto, Portugal
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中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
2-Alkylidene-3,3-dialkyl-1,4-dithianes and their oxathiane analogues were prepared from 1,2-diketones by a process involving formation of the monodithioacetal, transformation to a tertiary alcohol with organometallic reagents and ultimately 1,2-sulphur migration using methanesulphonyl chloride in pyridine as the activating agent.
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页码:1121 / 1138
页数:18
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