2-(Triphenylphosphonio)-4, 5-bis (thiobenzoyl)-1, 3-dithiole Tetrafluoroborate: A Versatile Wittig Reagent for the Synthesis of Unsymmetrical Tetrathiafulvalenes and 1, …

TK Hansen, MR Bryce, JAK Howard…

Index: Hansen, Thomas K.; Bryce, Martin R.; Howard, Judith A. K.; Yufit, Dimitri S. Journal of Organic Chemistry, 1994 , vol. 59, # 18 p. 5324 - 5327

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Citation Number: 24

Abstract

MeS PhC (0) S 19 20 McS 18 20 15-17 (31-75% yield). Deprotection of compound 17 and methylation of the resultant thiolate anion species has been examined. Reaction of 17 with 2 equiv of sodium ethoxide, followed by addition of an excess of methyl iodide, gave bis (methylthio1 derivative 18 (93% yield). The same reaction, employing only 1 equiv of ethoxide and an excess of methyl iodide, gave three products which were identified as ...