Zobrazeno 1 - 8
of 8
pro vyhledávání: '"W. T. Weller"'
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 86:504-510
A series of 2-alken-5-olides has been prepared from 1-alkyn-4-ols by carbonation of their Grignard reagents and selective hydrogenation of the triple bond of the obtained 5-hydroxy-2-alkynoic acids. The lactones were prepared by dehydration of the 5-
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 86:1335-1344
A series of 4-alken-5-olides has been prepared by dehydration of the corresponding 5-oxoalkanoic acids. These enollactones are sensitive to both oxygen and moisture. For the synthesis of 9cis-dodecen-5-olide, 4-heptynylmagnesium bromide was coupled w
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 86:481-503
A homologous series of δ- and ϵ-lactones has been synthesized, as well as some branched-chain δ-lactones. The δ-lactones have been prepared by oxidation of 2-alkylcyclopentanones or 2,5-dialkylcyclopentanones with Caro's acid or by hydrogenation
Autor:
W. T. Weller
Publikováno v:
Journal of the Society of Dyers and Colourists. 95:187-190
Photoisomerization of four purified stilbene–derived fluorescent whitening agents in methanol solution, followed by removal of residual trans–isomer, has afforded the pure cis–isomers in good yield. Measurement of the u. v. absorption character
Publikováno v:
Review of Scientific Instruments. 41:1112-1114
Error sources in carbon black coating on thin foil heat flux sensors accounting for false altitude effects in vacuum calibration
Autor:
W. T. Weller, B. H. Chase
Publikováno v:
The Journal of pharmacy and pharmacology. 16
The preparation of 37 potential antibacterial agents is described. Most of them possess the structure R—X—R’ where R and R’ are substituted phenyl groups and X is a short bridging group; 25 different examples of X have been studied. Minimum i
Autor:
W. T. Weller, A. Wassermann
Publikováno v:
Nature. 149:669-669
IN previous communications1 it has been shown that copper sulphide, activated by oxidizing a part of its surface into copper sulphate, is a catalyst for the low molecular polymerization of isobutene. It has now been found that the main product of the
Publikováno v:
Journal of the Chemical Society (Resumed). :250