Diazomethane (CH2N2)
نویسندگان
چکیده
منابع مشابه
A Theoretical Investigation of the Structure and Bonding of Diazomethane, CH2N2
We have investigated the electronic ground-state structure and binding mode of CH2N2 by ab initio multireference perturbation calculations CASPT2 and CASPT3, using correlation consistent cc-pVTZ basis sets. Our calculations suggest that the CH2-N2 binding between the CH2 (ãA1) and N2 (XΣg) moieties consists of a “harpooning” σ, bond from N2 to CH2 and a π-like bond due to the back-transfer of e...
متن کاملThe Action of Diazomethane on Uracil.
In the course of work now in progress on the determination of constitution of nucleic acid and its primary hydrolytic products-neucleotides and neucleosides-it has finally become necessary to develop and utilize a new method for introducing methyl radicals into pyrimidine and purine combinations. The alkylation methods generally employed for bringing about such changes, namely, by interaction o...
متن کاملReaction of Silk Fibroin with Diazomethane
The treatment of silk with an ethereal solution of diazometbane result ed in a rapid decrease in tyrosine content, with no appreciable d ecrease in tensile strength <o f the fibers . The results indicate that the hydroxyl groups of tyrosine in the 'Untreated fibers are free. The total methoxyl content after treatment of the fiber for 25 hours or longer was greater than could be accounted for by...
متن کاملReactions of Diazomethane with Sulfonyl-activated Double Bonds
The cyclo-addition reaction of diazomethane with a,/3-unsaturated sulfones is described. Divinyl sulfone and phenyl vinyl sulfone give 1or 2-pyrazolines depending on the reaction conditions. cisand /rans-l,2-Bis(methylsulfonyl)ethene form pyrazolines, which on reaction with either triethylamine or excess of diazomethane lead to substituted pyrazoles. The addition of diazomethane to doüble bonds...
متن کاملReactions of Diazomethane with Sulfonyl-activated Double Bonds
The cyclo-addition reaction of diazomethane with a,/3-unsaturated sulfones is described. Divinyl sulfone and phenyl vinyl sulfone give 1or 2-pyrazolines depending on the reaction conditions. cisand /rans-l,2-Bis(methylsulfonyl)ethene form pyrazolines, which on reaction with either triethylamine or excess of diazomethane lead to substituted pyrazoles. The addition of diazomethane to doüble bonds...
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ژورنال
عنوان ژورنال: Synlett
سال: 2007
ISSN: 0936-5214,1437-2096
DOI: 10.1055/s-2007-985599