Heterocyclisation of Unsaturated Phenylsulfides. Synthesis of a Novel Series of 2 Substituted-2,3-dihydrobenzothiazoles
摘要:
Aminoarylhydroxy thioalkenes react with tosyl derivatives to provide mainly N substituted -2 vinyl -2,3 dihydrobenzothiazoles. A different regiochemistry of cyclization depending on whether a methyl or a phenyl susbtituent was used, was observed. Formation of -2H- 3,4-dihydrobenzothiazines and dienes was observed.
Heterocyclisation of Unsaturated Phenylsulfides. Synthesis of a Novel Series of 2 Substituted-2,3-dihydrobenzothiazoles
摘要:
Aminoarylhydroxy thioalkenes react with tosyl derivatives to provide mainly N substituted -2 vinyl -2,3 dihydrobenzothiazoles. A different regiochemistry of cyclization depending on whether a methyl or a phenyl susbtituent was used, was observed. Formation of -2H- 3,4-dihydrobenzothiazines and dienes was observed.
A Convenient Synthesis of 2H-3,4-Dihydro-1,4-Benzothiazines
作者:Armelle Sauleau、Michele David、Jean Sauleau
DOI:10.1080/00397919809458690
日期:1998.11
Aminothioalkenols react with paratoluenesulfonic acid in benzene or with phosphoric acid in toluene, and provide mainly heterocyclization in 2H-3,4-dihydro-1,4- benzothiazines; formation of some indenes and diene (in one case) was observed too.
Heterocyclisation of Unsaturated Phenylsulfides. Synthesis of a Novel Series of 2 Substituted-2,3-dihydrobenzothiazoles
Aminoarylhydroxy thioalkenes react with tosyl derivatives to provide mainly N substituted -2 vinyl -2,3 dihydrobenzothiazoles. A different regiochemistry of cyclization depending on whether a methyl or a phenyl susbtituent was used, was observed. Formation of -2H- 3,4-dihydrobenzothiazines and dienes was observed.