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77995-06-3

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77995-06-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77995-06-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,9,9 and 5 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 77995-06:
(7*7)+(6*7)+(5*9)+(4*9)+(3*5)+(2*0)+(1*6)=193
193 % 10 = 3
So 77995-06-3 is a valid CAS Registry Number.

77995-06-3Relevant articles and documents

Efficient aerobic oxidative dehydrogenation of dihydropyrimidinones and dihydropyrimidines

Han, Bing,Han, Run-Feng,Ren, Yu-Wei,Duan, Xiao-Yong,Xu, Yi-Chuan,Zhang, Wei

supporting information; experimental part, p. 5615 - 5620 (2011/08/09)

4-Substituted dihydropyrimidinones and dihydropyrimidines were first efficient aerobic oxidized to the corresponding pyrimidinones and pyrimidines, respectively, in high yields by molecular oxygen in the presence of catalytic amount of N-hydroxyphthalimid

Oxidative dehydrogenation of dihydropyrimidinones and dihydropyrimidines

Yamamoto, Kana,Chen, Ye Grace,Buono, Frederic G.

, p. 4673 - 4676 (2007/10/03)

(Chemical Equation Presented) A mild, practical procedure for oxidative dehydrogenation with catalytic amounts of a Cu salt, K2CO 3, and tert-butylhydroperoxide (TBHP) as a terminal oxidant has been developed. This oxidation procedure is generally applicable to dihydropyrimidinones and most dihydropyrimidines.

An Improved General Synthesis of 4-Aryl-5-pyrimidinecarboxylates

Breaux, Eves J.,Zwikelmaier, Kurt E.

, p. 183 - 184 (2007/10/02)

We wish to report an improved, general synthesis of 4-aryl-5-pyrimidinecarboxylates 1.Two different routes have previously been reported for the synthesis of examples of this class of pyrimidine carboxylates.The parent compound, ethyl 4-phenyl-5-pyrimidinecarboxylate was prepared in low yield by the reaction of s-triazine with ethyl benzoyl acetate.In addition, the enol ether β-ketoaldehyde synthon, ethyl 2-benzoyl-3-ethoxy-2-propenoate, was reported to give 1a in modest yield when reacted with guanidine (2).

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