한호규 남기달 Lee Wha Suk 2024-01-22T01:40:18Z 2024-01-22T01:40:18Z 2022-01-10 1986-07-11 0022-3263 https://pubs.kist.re.kr/handle/201004/147832 A new synthesis of 5,6-dihydro-2-methyl-1,4-oxathiin-3-carboxylic acid derivatives by ring expansion of corresponding 1,3-oxathiolane 3-oxides is described. Oxidation of 2-methyl-N-phenyl-1,3-oxathiolane-2-acetamide (7a) and 2-methyl-1,3-oxathiolane-2-acetic acid methyl ester (7b) gave a mixture of cis and trans sulfoxides 8 and 9, major and minor, respectively. Assignments of the cis and trans sulfoxides were based on the aromatic solvent induced English AMER CHEMICAL SOC Synthesis of Dihydro-1,4-oxathiins by Rearrangement of 1,3-Oxathiolane Sulfoxides Article 10.1021/jo00364a033 1 Journal of Organic Chemistry, v.51, no.14, pp.2789 - 2795 Journal of Organic Chemistry 51 14 2789 2795 N scie scopus A1986D210900033 2-s2.0-0022622460 Chemistry, Organic Chemistry Article