DIRECT AROMATIC TERT-BUTYLATION DURING THE SYNTHESIS OF THIOCHROMAN-4-ONES

被引:25
作者
CLAYTON, SE [1 ]
GABBUTT, CD [1 ]
HEPWORTH, JD [1 ]
HERON, BM [1 ]
机构
[1] UNIV CENT LANCASHIRE,DEPT CHEM,PRESTON PR1 2HE,ENGLAND
关键词
D O I
10.1016/S0040-4020(01)80335-5
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The synthesis of thiochroman-4-ones from thiophenols and 3-methylbut-2-enoic acid effected by methane sulphonic acid is accompanied by tert-butylation of the aromatic ring. 3-Arylthiobutanoic acids, available using beta-butyrolactone, are efficiently cyclised in the same manner.
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页码:939 / 946
页数:8
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