Efficient syntheses of 2-(2,6-dichloro-4-trifluoromethyl-phenyl)tetrahydrocyclopenta, tetrahydrothiopyrano, hexahydrocycloheptapyrazoles and tetrahydroindazoles

Author:

Meegalla Sanath K.,Doller Dario,Liu Ruiping,Sha Deyou,Soll Richard M.,Dhanoa Dale S.

Publisher

Elsevier BV

Subject

Organic Chemistry,Drug Discovery,Biochemistry

Reference9 articles.

1. Synthesis, mechanism of action, and QSAR of herbicidal 3-substituted-2-aryl-4,5,6,7-tetrahydroindazoles

2. Wolf, A. D. US Patent 4 059 434, 1977.

3. Wolf, A. D. US Patent 4 124 274, 1978.

4. To the best of our knowledge, the only precedent for the direct preparation of this type of 5-unsubstituted pyrazoles is: Noravyan, A. S.; Mambreyan, Sh. P.; Vartanyan, S. A. Chem. Abstr. 1978, 89, 6309. For structure determination, see: Bardon, L.; Elguero, J.; Jacquier, R. Bull. Soc. Chim. Fr. 1967, 1, 289–294. For an example of reverse selectivity due to steric hindrance, see: Xenos, C. D.; Catsoulacos, P. Synthesis 1985, 3, 307–309.

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