Free radical-mediated carboxylation by radical reaction of alkyl iodides with methyl oxalyl chloride
作者:Sunggak Kim、Sang Yong Jon
DOI:10.1016/s0040-4039(98)01568-8
日期:1998.10
Free radical-mediated carboxylation is achieved by treatment of alkyl iodides with methyl oxalyl chloride and bis(tributyltin) in benzene at 350 nm to afford the corresponding acid chlorides as a major product along with a small amount of the methyl esters.
carboxyl substituted on the aromatic ring exhibited good inhibition to the QM enzyme and also showed effective antimalarial activities against resistant P. falciparum bearing the mutant enzymes with relatively low cytotoxicity to mammalian cells. The X-ray crystallographic analysis of the enzyme-inhibitor complexes suggested that the hydrophobic substituent at 6-position was accommodated well in the hydrophobic
Radical Cyanocarbonylation Using Alkyl Allyl Sulfone Precursors
作者:Sunggak Kim、Ilhyong Ryu、Sangmo Kim、Chang Ho Cho、Yoshitaka Uenoyama
DOI:10.1055/s-2005-921932
日期:——
Acyl cyanides have been prepared by the three-component coupling reactions comprised of alkyl allylsulfones, carbon monoxide, and p-tolylsulfonyl cyanide under tin-free radical reaction conditions.
CYCLOPROPENES AND METHOD FOR APPLYING CYCLOPROPENES TO AGRICULTURAL PRODUCTS OR CROPS
申请人:Yoo Sang-Ku
公开号:US20120322662A1
公开(公告)日:2012-12-20
Disclosed are a method for directly preparing in situ cyclopropenes for inhibiting ethylene action facilitating ripening and aging of plants via reaction of a cyclopropene precursor such as a compound of Formula (2) or Formula (3) with a fluoride (F
−
) and immediately applying the same to plants, and an aryl group-containing 1-alkylcyclopropene of Formula (6) effective for inhibiting the action of ethylene.
Production method of polyhydroxyalkanoate form substituted fatty acid ester as raw material
申请人:——
公开号:US20020081646A1
公开(公告)日:2002-06-27
Polyhydroxyalkanoates comprising a monomer unit having the following chemical formula (2):
1
(where the reference characters R represents an arbitrarily selected substituent and x represents an integer of 0 to 8) is produced by culturing a microorganism in a culture medium containing a substituted fatty acid ester having the following chemical formula (1):
2
(where the reference characters R and R′ separately denote an optional substituent and x represents an integer of 0 to 8). The microorganism is capable of taking the substituted fatty acid ester into the cells and synthesizing the desired polyhydroxyalkanoate in the culture medium.