ADDUCTS - ALDEHYDES AS INTERMEDIATE PRODUCTS FOR SYNTHESIS OF VITAMIN D DERIVATIVES Russian patent published in 1995 - IPC

Abstract RU 2036904 C1

FIELD: organic chemistry. SUBSTANCE: product: adduct-aldehyde of the formula (I) where R₁ and R₂ - H, OH, possibly substituted with C₂-C₅-alkylchlorocarbonate, aromatic C₁-C₄-carboxylic acid, aliphatic saturated carboxylic acid or tri-C₁-C₆-alkylsilyl halide or tri-C₁-C₆-alkylsilylethoxymethyl halide, and R₁ can not be H; Z - sulfonyl or group of the formula (II) where A and B - C₁-C₄-alkoxy, or A and B together phenylimine, ortho-phenylene. EFFECT: improved method of synthesis.

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RU 2 036 904 C1

Authors

Sebast'Janus J.Khalkes[Nl]

Vil'Gel'Mus R.M.Overbek[Nl]

Dates

1995-06-09—Published

1990-06-11—Filed