Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1979-04-06
1981-07-28
Jiles, Henry R.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
2603433R, C07C 6140, C07D30793
Patent
active
042811821
ABSTRACT:
Novel lactones of cis 2,2-dimethyl-cyclopropane-1-carboxylic acids of the formula ##STR1## wherein X.sub.1, X.sub.2 and X.sub.3 when identical are selected from the group consisting of chlorine and bromine and when at least two are different, are selected from the group consisting of fluorine, chlorine and bromine and a novel process for their preparation and a process for the preparation of cis 2,2-dimethyl-cyclopropane-1-carboxylic acids of the formula ##STR2## The acids of formula IV are useful to prepare esters of elevated insecticidal activity.
REFERENCES:
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patent: 3989654 (1976-11-01), Honda et al.
patent: 4014918 (1977-03-01), Martel
Toshio et al., Chem. Abst., 84:164253v.
Aratani et al., Tetrahedrin Letters, No. 21, pp. 1707-1710, 1975.
March, Advanced Org. Chem., pp. 771-772.
Demoute Jean-Pierre
Jolly Jean
Martel Jacques
Tessier Jean
Fan Jane T.
Jiles Henry R.
Roussel Uclaf
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