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Synthesis of Benzodihydrofurans by Asymmetric C−H Insertion Reactions of Donor/Donor Rhodium Carbenes. Chemistry 2017; 23:11843-11855. [DOI: 10.1002/chem.201701630] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Indexed: 01/21/2023]
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Wehrli H, Cereghetti M, Schaffner K, Urech J, Vischer E. Über Steroide und Sexualhormone. 222. Mitteilung. 11,20-Dihydroxy-18,20-cyclo-pregnan-Verbindungen. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19610440714] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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The Photochemistry of Heterocycles. ADVANCES IN HETEROCYCLIC CHEMISTRY 1970. [DOI: 10.1016/s0065-2725(08)60774-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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Reid ST. The photochemistry of drugs and related substances. FORTSCHRITTE DER ARZNEIMITTELFORSCHUNG. PROGRESS IN DRUG RESEARCH. PROGRES DES RECHERCHES PHARMACEUTIQUES 1968; 11:48-120. [PMID: 4873203 DOI: 10.1007/978-3-0348-7062-7_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Prinzbach H, Hagemann H, Hartenstein JH, Kitzing R. Photochemische Umwandlungen. Zur Photochemie des Cyclohexadiens-(1.3), III: Photoisomerisierung des Cyclohexadien-(1.3)-dicarbonsäure-(1.4)-dimethylesters zu Bicyclo[3.1.0]hexen-Derivaten. ACTA ACUST UNITED AC 1965. [DOI: 10.1002/cber.19650980722] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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McGreer DE, Morris P, Carmichael G. PYRAZOLINES: PART III. THE PREPARATION AND PYROLYSIS OF 4,5-DIMETHYL-3-CARBOMETHOXY-Δ2-PYRAZOLINE AND 3,5-DIMETHYL-3-CARBOMETHOXY-Δ1-PYRAZOLINE. CAN J CHEM 1963. [DOI: 10.1139/v63-103] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
4,5-Dimethyl-3-carbomethoxy-Δ2-pyrazoline and 3,5-dimethyl-3-carbomethoxy-Δ1-pyrazoline have been synthesized and pyrolized neat and in the vapor phase. The product analysis from these and a related dimethyl-3-carbomethoxypyrazoline indicate that substituent effects of methyls in the ring are cumulative.
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