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process for the manufacture of angulære whereas or carboxamidoderivater of polyhydronaphthalener, polyhydrophenanthrener,polyhydrochrysener or cyclopentanopolyhydrophenanthrener or ketaler, esters or
process for the manufacture of angulære whereas or carboxamidoderivater of polyhydronaphthalener, polyhydrophenanthrener,polyhydrochrysener or cyclopentanopolyhydrophenanthrener or ketaler, esters or
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机译:聚萘二甲酸酯,聚对苯二酚,聚对苯二酚或环戊烷聚对苯二甲酸酯或缩酮,酯或
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摘要
The invention comprises compounds having the following formulae FORM:0984024/C2/1 wherein R is a hydrogen atom or an alkanoyl group having not more than 8 carbon atoms. These compounds are obtained by subjecting a 17-oxo compound having the formula FORM:0984024/C2/2 to a Grignard reaction to obtain the 17a -methyl - 17b - hydroxy compound which on dehydration yields the D 16-17-methyl compound. Dehydration may be effected with phosphorus oxychloride. Specification 873,019 also is referred to.
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