Nickel(II) chloride as an efficient and useful catalyst for chemoselective thioacetalization of aldehydes

Tetrahedron Letters

Volumn 44, Issue 5, 2003, Pages 919-922

  Khan, Abu T ^a   Mondal, Ejabul ^a   Sahu, Priti R ^a   Islam, Samimul ^b  

^a INDIAN INSTITUTE OF TECHNOLOGY GUWAHATI   (India)

^b VISVA BHARATI UNIVERSITY   (India)

Author keywords

1,2 ethanedithiol; 1,3 propanedithiol; Dithioacetals; Ethanethiol; Nickel(II) chloride; Protection; Thiophenol

Indexed keywords

ACETAL DERIVATIVE; ALDEHYDE DERIVATIVE; NICKEL CHLORIDE;

ARTICLE; CATALYSIS; CATALYST; CHEMICAL REACTION; ROOM TEMPERATURE; THIOACETALIZATION;

EID: 0037467886     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4039(02)02771-5     Document Type: Article

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45. 2O by heating in an oven at 150°C and cooling in a desiccator at rt, was added. After adding the catalyst the reaction mixture turned into black in the case of 1,2-ethanedithiol or dark brown for 1,3-propanedithiol. The reaction mixture was stirred at room temperature and monitored by TLC until the starting material had disappeared. After completing the reaction, it was concentrated in vacuo and the residue was passed through a silica gel column.
46. 2Si: C, 58.84; H, 8.02; S, 19.63. Found: C, 58.60; H, 7.95; S, 19.70%.