Abstractรa-TMSdiazoketones on a solid support could be simply and efยฎciently prepared by reaction of the corresponding resin-bound acid chlorides with excess TMSdiazomethane, without any bases. These a-TMSdiazoketones were used via carbenes or carbenoids for a variety of solid-phase reactions. These
โฆ LIBER โฆ
Preparation of acid-labile resins with halide linkers and their utility in solid phase organic synthesis
โ Scribed by Khehyong Ngu; Dinesh V. Patel
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- French
- Weight
- 249 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
Mild and efficient preparation of acid-labile resins with displaceable halide linkers (3 and 4, X = Br and 1) is described. These resins can be used in combinatorial organic synthesis of numerous drug-scaffold libraries, Their synthetic utility is exemplified by high yielding N-alkylations with structurally and electronically diverse sets of aliphatic and aromatic amines. Amongst the various resins modified and evaluated in this study, Wang resin derived bromo resin (3, X = Br) offers the best practical choice with respect to loading, stability, and chemical reactivity.
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