Results 101 to 110 of about 32,735 (232)

INVESTIGAREA METODELOR DE SINTEZĂ PENTRU 3-(ANTRACEN-9-IL)-1-(4-IZOTIOCIANATOFENIL)-PROP-2-EN-1-ONĂ

open access: yesStudia Universitatis Moldaviae: Stiinte reale si ale naturii, 2017
Lucrarea prezintă o descriere succintă a izotiocianatochalconelor fluorescente şi redă unele metode de obţinere a lor. În aspect mai detaliat sunt cercetate metodele de obţinere a izotiocianatochalconelor ce conţin fragmentul antracenic.
Ana POPUŞOI
doaj  

New methods for preparing N,N-dialkyltrifluoroacetamides [PDF]

open access: yes
The customary preparative methods for N,N-dialkyltrifluoroacetamides involve the acylation of an amine by trifluoroacetic acid or its derivatives.
Hsu, L.
core   +1 more source

Study on reductive amination of biobased levulinic acid [PDF]

open access: yes, 2016
乙酰丙酸是重要的生物基平台化合物,其转化利用受到科研工作者的广泛关注。乙酰丙酸的还原胺化是制备高附加值乙酰丙酸胺化衍生产品的重要途径,近年来成为研究的热点。本论文建立了无催化剂乙酰丙酸还原胺化的反应体系,探讨了乙酰丙酸还原胺化合成直链氨基酸4-二甲氨基戊酸(4-DAPA)和环状化合物5-甲基-2-吡咯烷酮(5-MeP)的反应途径。 首先,研究了以N,N-二甲基甲酰胺为胺源,在无催化剂条件下直接还原胺化乙酰丙酸合成新型化合物4-二甲氨基戊酸(4-DAPA)的反应途径。在200℃条件下反应4h,4 ...
王彦钧
core  

Relation between TMAOase activity and content of formaldehyde in fillet minces and bellyflap minces from gadoid fishes [PDF]

open access: yes, 1997
Minced fish is a significant component of a number of frozen fishery products like fish fingers, cakes and patties. Predominately minced fish is produced from gadoid species (Alaska pollack, cod, saithe, hake and others) possessing the enzyme ...
Gonzales-Sotelo, C.   +6 more
core  

DIMETHYLAMINE [PDF]

open access: yesChemical & Engineering News Archive, 1949
openaire   +1 more source

A study of polymers containing silicon- nitrogen bonds Annual summary report, May 4, 1965 - May 3, 1966 [PDF]

open access: yes
Polymers containing silicon-nitrogen bonds as elastomers with high thermal stability for aerospace ...
Burks, R. E., Jr.   +2 more
core   +1 more source

An Experimental and Modeling Study of Nanoparticle Formation and Growth from Dimethylamine and Nitric Acid [PDF]

open access: yes, 2019
Barsanti, Kelley C   +4 more
core  

Research and development of high temperature resistant polymeric film forming material final summary report, 1 mar. 1961 - 17 apr. 1962 [PDF]

open access: yes
Preparation of poly-organometallosiloxane polymers from reactions between bis-dialkylamino metal derivatives and ...
Davis, F. C.   +2 more
core   +1 more source

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