Replacement of C−O by P−O in Cyclic Acetals and Ketals
✍ Scribed by Feng Wang; Shuguang Ma; W. Andy Tao; R. Graham Cooks
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 108 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0044-8249
No coin nor oath required. For personal study only.
✦ Synopsis
Efficiency and structural specificity earmark the reaction of phosphonium ions 1 with cyclic acetals and ketals to yield 1,3,2-dioxaphospholanium ions 2 [Eq. (1)]. Potential applications of this reaction are in monitoring trace levels of organophosphorus esters and in developing novel carbonyl deprotection agents. R=OCH , CH ; R =H, CH ; R =CH , C H ; R =H, CH .
📜 SIMILAR VOLUMES
A variety of allylic O,O-and N,O-acetals were synthesized using a mild palladium-catalyzed coupling of an alcohol or sulfonamide with an alkyl or aryl 1,2-propadienyl ether. The resulting linear acetals were used for the synthesis of unsaturated rings via ring-closing metathesis, in which the acetal
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