Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Donald F. Tavares"'
Publikováno v:
ChemInform. 22
Optically pure (S)-cyclopent-2-en-1-ol, (c 1.1, CHCl3), and (S)-3-methoxycyclopentene, (c 3.86, n-hexane), were prepared from ethyl (1R,2S)-2-hydroxycyclopentanecarboxylate, which is readily availa...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e97327276282e05c44eb9ca3a42e6b6d
https://doi.org/10.1002/chin.199108149
https://doi.org/10.1002/chin.199108149
Publikováno v:
Canadian Journal of Chemistry. 68:1559-1563
Optically pure (S)-cyclopent-2-en-1-ol, [Formula: see text] (c 1.1, CHCl3), and (S)-3-methoxycyclopentene, [Formula: see text] (c 3.86, n-hexane), were prepared from ethyl (1R,2S)-2-hydroxycyclopentanecarboxylate, which is readily available by yeast
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72c9b1e5d93416fc3700f8e586e95d77
https://doi.org/10.1139/v90-241
https://doi.org/10.1139/v90-241
Publikováno v:
Canadian Journal of Chemistry. 61:2572-2580
The static and dynamic structures of the amide derivatives of racemic and (R)-(+)-2-methoxy-2-phenyl-3,3,3-trifluoropropanoic acid (MPTA) with diisopropyl amine (1), meso-2,6-dimethylpiperidine (2), (R)-(−)- and (S)-(+)-2-methylpiperidine (3 and 4,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9294a60cc08585aeadb4e90277ec93f4
https://doi.org/10.1139/v83-443
https://doi.org/10.1139/v83-443
Publikováno v:
Canadian Journal of Chemistry. 63:3510-3515
The 5-endo-trig cyclization reactions of α′-hydroxy α,β-unsaturated carbonyl compounds to form the 3-furanone ring system has been investigated by means of MNDO calculations. In acid medium, the activation energy for ring formation is reduced by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e17591c3b1280121db68c4391661fe09
https://doi.org/10.1139/v85-575
https://doi.org/10.1139/v85-575
Publikováno v:
Canadian Journal of Chemistry. 60:2451-2455
The three fluorine atoms of N,N-dialkyl amide and chloride derivatives of 2-methoxy-2-phenyl-3,3,3-trifluoropropanoic acid are magnetically nonequivalent below –60 °C and exhibit a clear ABC coupling pattern from which chemical shifts and geminal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::799f78d8514f9b9343f9df06098ff107
https://doi.org/10.1139/v82-354
https://doi.org/10.1139/v82-354
Publikováno v:
Journal of the American Chemical Society. 83:3453-3457
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9f4fbaf08b5bd93147f08250f75da65
https://doi.org/10.1021/ja01477a025
https://doi.org/10.1021/ja01477a025
Autor:
Donald F. Tavares, Peter F. Vogt
Publikováno v:
Canadian Journal of Chemistry. 47:2875-2881
Darzens type condensation of chloromethyl p-tolyl sulfone with benzaldehyde, acetaldehyde, acetone, benzophenone, and cyclohexanone, with potassium tert-butoxide as base, gave good to excellent yields of the corresponding α,β-epoxy sulfones (1). Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::817ca699002ff5bbc8efdce3341bf696
https://doi.org/10.1139/v69-477
https://doi.org/10.1139/v69-477
Publikováno v:
The Journal of Organic Chemistry. 27:1251-1254
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79e74dda09d7842eda7bbce15aefadef
https://doi.org/10.1021/jo01051a032
https://doi.org/10.1021/jo01051a032
Autor:
Charles G. Carlson, Sirpa Kotila, Yan. Y. Huang, Judith E. Hall, Arvi Rauk, Donald F. Tavares
Publikováno v:
Canadian Journal of Chemistry. 65:2461-2463
Boron oxide has been found to act as an efficient reagent in the preparation of a number of formate esters by the direct esterification of formic acid with the alcohol. The reaction is most appropriate for primary and secondary alcohols, including un
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0b82dc3999b07eaba3111161996aa7c
https://doi.org/10.1139/v87-411
https://doi.org/10.1139/v87-411
Autor:
Werner H. Ploder, Donald F. Tavares
Publikováno v:
Canadian Journal of Chemistry. 48:2446-2448
An attempted Wittig reaction of o-xylylene-bistriphenylphosphorane with diethyl ketomalonate gave ethyl 3-ethoxy-2-naphthoate, representing formally, a Wittig reaction with an ester carbonyl.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8648195d81cf1457cdc3a17012d4633
https://doi.org/10.1139/v70-413
https://doi.org/10.1139/v70-413