The transformation of the CC bond of olefin to nitriles has been developed, using easily available NaNO2 as both the nitrogensource and oxidant. Several aryl, heterocyclic nitriles with various substituting groups could be successfully prepared in good to high yields. Based upon experimental observations, a possible reaction mechanism is proposed.
IMPROVED METHOD FOR PRODUCING SPECIFIC OXIMES AND OXIMETHERS
申请人:BAYER CROPSCIENCE Aktiengesellschaft
公开号:US20160107986A1
公开(公告)日:2016-04-21
Method for preparing certain oximes and oxime O-methyl ethers by reacting poorly water-soluble carbonyl compounds with salts of hydroxylamine or hydroxylamine O-methyl ether or the free base of hydroxylamine in the presence of certain phosphoric esters or salts thereof of the formula (I)
wherein R
1
, R
2
and X are defined as specified in the description.
Synthesis of 4-substituted 3-chloro-1,2,5-thiadiazoles from monosubstituted glyoximes
作者:F. I. Kryshenko、E. A. Knyazeva、L. S. Konstantinova、O. A. Rakitin
DOI:10.1007/s11172-016-1635-1
日期:2016.11
One-pot synthesis of 3-chloro-1,2,5-thiadiazoles from monosubstituted glyoximes and sulfur monochloride was developed.
开发了由单取代乙醛肟和一氯化硫一锅法合成 3-氯-1,2,5-噻二唑。
Divergent Synthesis of Five-Membered Nitrogen Heterocycles via Cascade Reactions of 4-Arylfuroxans
作者:Leonid L. Fershtat、Daniil A. Chaplygin、Ivan V. Ananyev、Nina N. Makhova
DOI:10.1055/s-0040-1707393
日期:2020.9
A novel method for the synthesis of a diverse series of functionally substituted five-membered heterocyclic compounds via atom-economic, regio-, and diastereoselective one-pot reaction cascade was developed. This approach involves a ring opening in 4-arylfuroxans to α-oximinoarylacetonitrile oxides followed by [3+2] cycloaddition to various dipolarophiles to afford multisubstituted isoxazoles and isoxazolines