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Selective Colorimetric Determination of Local Anesthetics Containing a Tertiary Amine

โœ Scribed by Feldmann, E. G.; Koehler, H. M.

Book ID
126830669
Publisher
International and American Association of Dental Research
Year
1960
Tongue
English
Weight
412 KB
Volume
39
Category
Article
ISSN
0022-0345

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Scheme 1. Reagents and conditions: a) NaH, DMF (anhyd), RT; b) CH 3 OH (anhyd), reflux; c) di-tert-butyldicarbonate, CH 2 Cl 2 , RT; d) H 2 (10 atm), 20 % Pd(OH) 2 /C, EtOAc, RT; e) HSO 3 Cl, 0 8C; f) CH 2 Cl 2 , RT. Scheme 2. Reagents and conditions: a) TFA in CH 2 Cl 2 , 08C; b) 1 n NaOH, THF, RT