## Abstract A new method for the preparation of benzoxazoleโ[phenylโ^13^C~6~] (**1**) starting from anilineโ[^13^C~6~] (**4**) has been developed involving directed __ortho__โmetalation (D__o__M) chemistry. The synthesis comprises four steps and an overall yield of 39% was obtained. Copyright ยฉ 200
Synthesis of deuterium labelled 2-bromobenzylamine by directed ortho-metalation chemistry
โ Scribed by Jens Atzrodt; Volker Derdau
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- French
- Weight
- 100 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0022-2135
- DOI
- 10.1002/jlcr.912
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โฆ Synopsis
Directed ortho-metalation (DoM) strategy has been applied for the development of a short procedure for the regiospecific synthesis of [phenyl-2 H 4 ]-2-bromo-benzylamine 6 starting from commercially available [phenyl-2 H 5 ]-benzoyl chloride 1. A strong isotope effect was observed during the ortho-substitution.
๐ SIMILAR VOLUMES
Regioselective Directed ortho Metalation of 3H-Naphtho[2,1b]pyrans. Synthesis of Methylteretifolione B. -Treatment of naphthopyrans with tBuLi under controlled conditions results in selective ortho-metalation. Following quenching with electrophiles yields single products. The methyl derivative (II
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The H -antagonists, metiamide and cimetidine were labelled 2 with deuterium and tritium in the 2-position of the imidazole ring by the uncatalyzed exchange reaction with deuterium and tritium oxide at 100ยฐC. The sulfur-35 labelled metiamide was prepared by an exchange reaction with elemental sulfur-