Quarterly Journal of the Chemical Society of London, Volume 11 |
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Page 2061
... olefinic H ) , 3.81 ( s , 4 - olefinic H ) , and 3.16 ( s , 6- and 7 - ArH ) . 3B - Acetoxy - 19 - norergosta - 5,7,9,14,22 - pentaene ( 4 ) .— A solution of dichlorodicyanobenzoquinone ( 270 mg . ) in dioxan ( 6.0 ml . ) was added ...
... olefinic H ) , 3.81 ( s , 4 - olefinic H ) , and 3.16 ( s , 6- and 7 - ArH ) . 3B - Acetoxy - 19 - norergosta - 5,7,9,14,22 - pentaene ( 4 ) .— A solution of dichlorodicyanobenzoquinone ( 270 mg . ) in dioxan ( 6.0 ml . ) was added ...
Page 2143
... olefinic proton n.m.r. signal ) after uptake of 2 equiv . of hydrogen . The n.m.r. spectrum of compound ( VII ) ( 100 MHz ; CDC ) exhibited signals at 3.05 ( 2H , m , one azo- methine H and one bridgehead H ) , 3.33 ( 1H , t , olefinic ...
... olefinic proton n.m.r. signal ) after uptake of 2 equiv . of hydrogen . The n.m.r. spectrum of compound ( VII ) ( 100 MHz ; CDC ) exhibited signals at 3.05 ( 2H , m , one azo- methine H and one bridgehead H ) , 3.33 ( 1H , t , olefinic ...
Page 2278
... olefinic insertion products . That the olefinic products and non- stereospecific cyclopropane adducts were not formed by isomerisation of the stereospecific cyclopropane adducts was shown by the irradiation of a mixture ( 100 mg ) of 1 ...
... olefinic insertion products . That the olefinic products and non- stereospecific cyclopropane adducts were not formed by isomerisation of the stereospecific cyclopropane adducts was shown by the irradiation of a mixture ( 100 mg ) of 1 ...
Contents
Organic chemistry | 2023 |
Constituents of Withania somnifera Dun Part XII The withanolides of an Indian chemotype | 2032 |
Cyclic hydroxamic acids Part I Synthesis and reactions of 12dihydro1hydroxy46dimethyl2oxo | 2044 |
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acetic acid acetic anhydride acetone acetyl alcohol aldehyde alumina Amer amine ammonia anhydride anhydrous aqueous aromatic atom benzene benzyl bromide CH₂ Chem chloride chloroform chromatographed cm.¹ cm¯¹ cm¹ compound cooled crystallised cyclisation decomp derivative dichloromethane dilute dimer dimethyl dimethylformamide dioxan dried eluted ester ethanol ethyl acetate evaporated extracted with ether filtered filtrate Found gave give heated under reflux hydrochloric acid hydrolysis hydroxide i.r. spectrum iodide isolated isomer ketone lithium aluminium hydride methyl mixed m.p. mixture was stirred mmHg mmol mmole mole n.m.r. spectrum needles nitrogen obtained olefinic oxidation peroxide phenol potassium prepared protons pyridine reaction reduction reflux requires residue ring room temperature salt signals singlet sodium borohydride sodium hydroxide solid solution solvent spectra structure synthesis tetrahydrofuran treatment yield