Journal of the American Chemical Society p. 4155 - 4159 (1980)
Update date:2022-08-04
Topics:
Okano, Valkiria
Bastos, Marilene P.
Amaral, Luciano do
Phenylhydrazone formation from the three isomeric pyridine N-oxide carboxaldehydes occurs with two breaks in the pH-rate profiles.Under alkaline conditions, nonlinearity between first-order rate constants and amine concentration established that carbinolamine dehydration is rate determining.Under more acidic conditions, structure-reactivity correlations and susceptibility to general acid catalyis, as well as the break in the pH-rate profile, strongly suggest that stepwise formation of carbinolamine becomes the rate-determining step.Finally, the second break in the pH profile is interpreted as reflecting a transition to rate-determining concerted formation of the carbinolamine.
View MoreShanghai Sinofluoro Scientific Co., Ltd
Contact:+86-21-64279360
Address:Room 1006,Building 3,#58 East Xinjian Road, Shanghai ,201100,China,
Suzhou Howsine Biological Technology Co.,Ltd(expird)
website:http://www.howsine.com
Contact:86-512-67262751
Address:No 3,Weihua Road ,Suzhou Industrial Park ,Jiangsu ,China.
Contact:+86-531-58668191 58668193 58668196 58661173
Address:No 55,Beixiaoxinzhuang West Street,Jinan City, Shandong Province
Changyi Xinxing Technology Development Co., Ltd.
Contact:0086-510-86651065(Time Zone:8),86651656
Address:94 Yingbinxilu WestRoad, Huangtu Town, Jiangyin City, Jiangsu, China
Xuzhou Tianrun Chemical Co.,Ltd
website:http://www.tianrunchem.cn
Contact:86-516-83832636
Address:fuxing road
Doi:10.1021/om9009334
(2010)Doi:10.1021/jo102070e
(2011)Doi:10.1039/d0cc05070a
(2020)Doi:10.1016/j.tet.2009.10.087
(2010)Doi:10.1016/j.tet.2009.10.106
(2010)Doi:10.1039/b915864b
(2010)
