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I2-mediated C3-formylation of indoles by tertiary amine and H2O

✍ Scribed by Zhang, Bo; Liu, Bin; Chen, Jianbin; Wang, Jiehui; Liu, Miaochang

Book ID
126450427
Publisher
Elsevier Science
Year
2014
Tongue
French
Weight
609 KB
Volume
55
Category
Article
ISSN
0040-4039

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## Abstract An abbreviated synthesis of isotopically labelled salmeterol has been achieved. The key improvement utilizes a highly selective Cs~2~CO~3~‐mediated one‐pot alkylation of benzylamine by 6‐bromo‐1‐(4′‐phenylbutoxy)hexane to prepare the limiting reagent, 6‐__N__‐benzylamino‐1‐(4′‐phenylbut