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Phosphorus, Sulfur, and Silicon and the Related Elements Volume 176, 2001 - Issue 1
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Original Articles

Silica Chloride (Sio2-Cl) Promotes Highly Efficient Transformation of Acylals to Dithianes, Dithiolanesm, and Oxathiolanes

Habib Firouzabadi Department of Chemistry, College of Sciences Shiraz University, Shiraz, Iran; Department of Chemistry, College of Sciences Shiraz University, Shiraz, 71454, Iran E-mail: [email protected]
,
Nasser Iranpoor Department of Chemistry, College of Sciences Shiraz University, Shiraz, Iran
&
Hassan Hazarkhani Department of Chemistry, College of Sciences Shiraz University, Shiraz, Iran
Pages 165-171 | Received 25 Jan 2001, Accepted 25 Apr 2001, Published online: 23 Oct 2006
 
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Abstract

Acylals react with 1,3-propanedithiol, 1,2-ethanedithiol and 2-mercaptoethanol in the presence of silica chloride to give 1,3-dithianes, 1,3-dithiolnnes and 1,3-oxathiolanes in excellent yields in CH2Cl2 at room temperature. It has been observed that acylals were more reactive than their aldehydes hut less reactive than acetals and ketals. Also aliphatic acylals survive under these conditions.

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