Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1985-09-10
1987-06-02
Killos, Paul J.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
562465, 562496, 560 55, 560 56, 560105, C07C 6511
Patent
active
046705864
ABSTRACT:
A method for the production of an .alpha.-aryl-alkanoic acid represented by the general formula II: ##STR1## wherein R.sup.3 stands for a hydrogen atom or an alkyl group and Ar for an aromatic residue, characterized by subjecting an .alpha.-haloalkyl-aryl ketal represented by the general formula I: ##STR2## wherein Ar has the same meaning as defined above, R.sup.1 and R.sup.2 independently stand for an alkyl group and embrace the case wherein they jointly form a cyclic acetal, R.sup.3 has the same meaning as defined above, and X stands for a halogen atom to a rearrangement reaction in the presence of at least one zinc compound selected from the group consisting of oxide, hydroxide, sulfide, carbonate, and basic carbonate of zinc and subsequently hydrolyzing the product of said rearrangement reaction.
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J.O.C. 22, 662 (1957), Seven-Membered Cyclic Acetals.
JCS Chem. Com. No. 22 (1982), pp. 1311-1312, Reaction of 2-Alkyl-2-Phenyl-1,3-Dioxolans with Iodine Monochloride: Formation of Alpha-Phenylalkanoate Esters.
J.O.C. 21, 1366 (1956), Preparation and Properties of 1,3-Dioxep-5-enes.
Synthesis 23 (1974), Anteunis, Improved Direct Acetalization for (Strained) Cyclic Acetals.
Suzuki Hisayuki
Watanabe Takamichi
Yabe Yuta
Hueschen Gordon W.
Killos Paul J.
Nippon Chemicals Co., Ltd.
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