Macrocyclic carbonyl compounds, process for their preparation an

Details Macrocyclic carbonyl compounds, process for their preparation an Macrocyclic carbonyl compounds, process for their preparation an

1982-06-22

1984-04-17

Helfin, Bernard

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568445, 585357, C07C 49523, C07C 4561

Patent

active

044436327

ABSTRACT:
Compounds of formula ##STR1## having a double bond in one of the positions indicated by the dotted lines and wherein R represents a hydrogen atom or a methyl radical are utilized as starting materials for the preparation of bicyclic unsaturated hydrocarbons of formula ##STR2## (R=H, CH.sub.3). Conversion of (II) to (I) occurs via thermal treatment in the presence of a metal catalyst.
Disclosed is also a process for the preparation of (II).

REFERENCES:
patent: 3904651 (1975-09-01), Becker
patent: 4328383 (1982-05-01), Eschenmoser et al.

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