Organic Process Research and Development p. 543 - 547 (2009)
Update date:2022-08-11
Topics:
Wilson, Robert D.
Cleator, Ed
Ashwood, Michael S.
Bio, Matthew M.
Brands, Karel M.J.
Davies, Antony J.
Dolling, Ulf-H
Emerson, Khateeta M.
Gibb, Andrew D.
Hands, David
McKeown, Arlene E.
Oliver, Steven F.
Reamer, Robert A.
Sheen, Faye J.
Stewart, Gavin W.
Zhou, George X.
A practical and efficient synthesis of 1,4,5,6-tetrahydro-3-(1Htetrazol- 5-yl)cyclopenta[c]pyrazole, 1, is described. A new one-pot process has been developed, starting from the commercially available 1H-tetrazole-5-carboxylic acid-ethyl ester sodium salt which is reacted in a pseudo-Claisen condensation reaction with cyclopentanone, followed by the addition of hydrazine.
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(2016)
