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Alkylated hindered sulfonamides and processes for their preparation by Michael addition to propiolates
Alkylated hindered sulfonamides and processes for their preparation by Michael addition to propiolates
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机译:烷基化受阻磺酰胺及其通过迈克尔加成到丙酸酯中的制备方法
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摘要
The present invention relates to a process for the preparation of compounds of formula (b), in which a compound of formula V is reacted with a compound of formula VI. The resulting compound of formula IV is reduced to a compound of formula III which is hydrolysed to a compound of formula (b). Alternatively, a compound of formula IV is hydrolysed to a compound of formula (a) which reduced to a compound of formula (b). Compounds of formula IV are novel. In the formulae the variables are as defined in the claims. CHEM
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