Quarterly Journal of the Chemical Society of London, Issue 1, Pages 1-776 |
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Page 292
... ester utilizing a novel phosphonate reagent as an acetoacetic ester synthon is described and the earlier stereochemical assignments at C - 9 for the isomeric tris- poric C acids are revised . 1.93 ( s , 5 - CH3 ) , 2 · 14 ( s , 14 - H ) ...
... ester utilizing a novel phosphonate reagent as an acetoacetic ester synthon is described and the earlier stereochemical assignments at C - 9 for the isomeric tris- poric C acids are revised . 1.93 ( s , 5 - CH3 ) , 2 · 14 ( s , 14 - H ) ...
Page 578
... esters in subsequent transformations . In the event , the photolysis of N - [ ( t- butoxycarbonyl ) diazoacetyl ] piperidine ( 3 ; R = But ) , m.p. 79-80 ° , Vmax ( CC1 ) 2130 ( CN2 ) , 1710 ( ester ) , and 1630 19 cm - 1 ( amide ) ...
... esters in subsequent transformations . In the event , the photolysis of N - [ ( t- butoxycarbonyl ) diazoacetyl ] piperidine ( 3 ; R = But ) , m.p. 79-80 ° , Vmax ( CC1 ) 2130 ( CN2 ) , 1710 ( ester ) , and 1630 19 cm - 1 ( amide ) ...
Page 627
... ester and ( to a greater extent ) the ethyl ester this form is thermodynamically more stable at 303 K than the l.f. form , but the situation is reversed in the t - butyl ester . Correspondingly , in the series of esters ( IV ) only the ...
... ester and ( to a greater extent ) the ethyl ester this form is thermodynamically more stable at 303 K than the l.f. form , but the situation is reversed in the t - butyl ester . Correspondingly , in the series of esters ( IV ) only the ...
Contents
Page | 1 |
Electrochemical Indications of New Oxidation States in Transitionmetal Dicarbollide Complexes | 8 |
Synthesis of a 1026Pyridinophane by U K GEORGI and J RÉTEY | 32 |
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acetate acid addition alcohol Amer analysis appears aromatic assigned atoms band bond calculated carbon carbonyl Chem Chemical Chemistry chloride chromatography co-ordination Comm complexes compounds concentration configuration confirmed consistent constants containing corresponding coupling Crystal Department of Chemistry derivatives determined effect electron ester ether evidence expected experiments Figure followed formation formed gave give hydrogen indicate intermediate involving isolated ligand mass measured mechanism metal method methyl mixture molecular molecule n.m.r. spectrum nitrogen observed obtained occurs oxidation oxygen peak position possible prepared presence protons radical ratio reaction rearrangement Received recently reduction relative reported Research resonance respectively ring Scheme shift shown shows signals similar solution solvent space group spectra spectrum structure studies substituted suggested Summary synthesis Table temperature Tetrahedron Letters thank tion University values X-ray yield