Posebna izdanja (Srpdka kraljevska akademija), Том 237 |
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Страница 21
... expected dienol ( XXIII ) is produced in 81 % yield.190 , 205 , 206 The reduction of the double bond with the keto group remaining unaffected can be accounted for in two ways : either the primary hydroxy derivative ( XXIII ) undergoes ...
... expected dienol ( XXIII ) is produced in 81 % yield.190 , 205 , 206 The reduction of the double bond with the keto group remaining unaffected can be accounted for in two ways : either the primary hydroxy derivative ( XXIII ) undergoes ...
Страница 70
... expected product , 38,5 - dihydroxy- coprostane ( VII ) , and 60 % of 33,6ẞ - dihydroxycholestane ( VIII ) ; the formation of the latter being accompanied by inversion of configu- ration.706 The 3a - hydroxy derivative gave similar ...
... expected product , 38,5 - dihydroxy- coprostane ( VII ) , and 60 % of 33,6ẞ - dihydroxycholestane ( VIII ) ; the formation of the latter being accompanied by inversion of configu- ration.706 The 3a - hydroxy derivative gave similar ...
Страница 71
... expected in accordance to the rule mentioned above ) ; instead , it is converted to the secondary alcohol , methylcyclohexylcarbinol ( XIV ) , as the result of the inductive effect ( +1 ) of the methyl group , which 1653 * See XIII , 1 ...
... expected in accordance to the rule mentioned above ) ; instead , it is converted to the secondary alcohol , methylcyclohexylcarbinol ( XIV ) , as the result of the inductive effect ( +1 ) of the methyl group , which 1653 * See XIII , 1 ...
Садржај
LITHIUM ALUMINUM HYDRIDE AS A REDUCING AGENT IN | 1 |
III | 7 |
Special Procedures and Preparation of Hydride Solutions | 13 |
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Acta action of lithium alcohols aldehydes aliphatic alkyl amides amino aromatic attack by lithium carbon atom carbonyl carbonyl group CH₂ CH₂O CH₂OH CH3 CH3 Chem Chemistry and Industry Chim chloride complex compounds containing converted corresponding cyclic derivatives diethyl ether dihydro diol double bond enol epoxides ester group ether solution ethylenic forcing conditions formation functional groups furnishes give H₂C H₂CO H₂O halides halogen Helv heterocyclic Hydride in Organic hydrocarbons hydrogen hydrogenolysis hydrolysis hydroxy hydroxyl group intermediate Karrer ketones lactams lactone LIAIHA lithium aluminum hydride lithium hydride means of lithium mechanism methyl mixture Monatsh nitriles nitro nitrogen nucleophilic obtained olefin optically active oxazolone oxide polar racemic react with lithium reaction reagent reducing agent reductions by lithium ring Rosenkranz saturated solvent steroids sulfinic acids sulfonate sulfonic acids temperatures tertiary tetrahydrofuran unsaturated VIII XVII XVIII XXIII yields