Synthesis of cyclobutanols
专利汇可以提供Synthesis of cyclobutanols专利检索，专利查询，专利分析的服务。并且PURPOSE: To synthesize a cyclobutanol useful as an intermediate for medicines, agricultural chemicals, etc., with efficiently and high selectivity in position and stereostructure by reducing an optical [2+2] additive of a 1, 3-dioxin-4-one with a specific unsaturated compound.
CONSTITUTION: (i) Compounds shown by formula IV to formula V, optical [2+2] additives of a compound shown by formula I [R
1 and R
2 are 1-6C alkyl or (CH)
2 )
1 ; (l) is 4, 5 or 6]with compounds shown by formula II to formula III (R
3 is H or 1-8C alkyl) are reduced to efficiently give the objective compounds shown by formula VI to VII (R
4 is H or acyl) useful as an intermediate for oxetanocin (antiviral agent) while maintaining stereostructure. (ii) An ester structure part containing an unsaturated terminal of alcohol part is introduced to a reaction group at the 2-position of the compound shown by formula I and orientation of addition is controlled in one direction by intramolecular addition reaction to give a substituted cyclobutanol selectively in position and stereostructure.
COPYRIGHT: (C)1992,JPO&Japio，下面是Synthesis of cyclobutanols专利的具体信息内容。
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