نتایج جستجو برای: Trimethyl Phosphate

تعداد نتایج: 107562  

A new one-dimensional uranium(VI) coordination polymer, [UO2(μ-DMP)2(TMP)]n (1) (DMP is dimethyl phosphate and TMP is trimethyl phosphate), was prepared from the reaction of UO2(NO3)2.6H2O and TMP in in THF (THF is tetrahydrofuran) as a solvent. Suitable crystals of this complex for crystal structure determination were obtained by slow evaporation of the produced yellow solution at room tempera...

Journal: :Nucleic acids research 1979
K K Ogilvie S L Beaucage M F Gillen D W Entwistle

Trimethyl phosphate, dimethyl and diethyl sulfate and methyl and ethyl methanesulfonate all give high yields of alkylation on purines and pyrimidines in the presence of tetrabutylammonium fluoride. Trimethyl phosphate produces near quantitative yields of diesters of nucleic acids but gives virtually no triester formation. The alkyl sulfates produce very high yields of triesters of nucleic acids...

Sayyed Zahra Sayyed-Alangi

Stable derivatives of oxaphosphaphenanthrenes were prepared using multicomponent reactions of 3-bromo-2-naphthol, dialkyl acetylenedicarboxylate and trimethyl or triphenyl phosphite under microwave conditions with good yields. 

Journal: :The journal of physical chemistry. A 2011
N Ramanathan K Sundararajan Bishnu Prasad Kar K S Viswanathan

The conformations of trimethyl phosphite (TMPhite) were studied using matrix isolation infrared spectroscopy. TMPhite was trapped in a nitrogen matrix using an effusive source maintained at two different temperatures (298 and 410 K) and a supersonic jet source. The experimental studies were supported by ab initio computations performed at the B3LYP/6-31++G** level. Computations identified four ...

Journal: :Bulletin of the Chemical Society of Japan 1979

1998
Dimitris S. Argyropoulos Liming Zhang

A semiquantitative analytical method has been developed for the determination of the total quinonoid content (o-benzoquinones and p-benzoquinones) of soluble lignins. The method is based on detailed measurements and observations made with model oand p-quinones, which in dry organic solvents were shown to form adducts with trimethyl phosphite in quantitative yield. These adducts gave 31P NMR sig...

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