Can anyone tell me the procedure of synthesis of s-bocalanine tetrabutylammonium salt and dicarboxylate tetrabutylammonium salt?

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Bruce Levison

See first link; dissolve the BOC amino acid in methanol and add one equivalent of tetrabutylammonium hydroxide in methanol (see 2nd link) and then evaporate off the methanol and dry over P2O5.

http://ac.els-cdn.com/S0957416612006040/1-s2.0-S0957416612006040-main.pdf?_tid=7e2442b0-c323-11e6-823b-00000aacb35e&acdnat=1481846969_beb8bf80418e221306c51e048f3b5922

http://www.sigmaaldrich.com/catalog/product/sial/230189?lang=en®ion=US

Avinash Dhamija

Thank you Dr. Bruce Levison for the answer.