4820-41-1Relevant articles and documents
A new and concise way to enamides by fluoroalkanosulfonyl fluoride mediated Beckmann rearrangement of α,β-unsaturated ketoximes
Yan, Zhaohua,Xu, Yun,Tian, Weisheng
supporting information, p. 7186 - 7189 (2015/02/02)
The reaction of α,β-unsaturated ketoximes with fluoroalkanosulfonyl fluorides in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) underwent the Beckmann rearrangement smoothly to afford the corresponding acid-sensitive enamides in moderate to excellent yields, which provides a new efficient method for the preparation of acid-sensitive enamides.
STEROIDS .LIII. TRANSFORMATION OF 3β-ACETOXY-5α-ANDROSTAN-17-ONE INTO 17α- AND 17β-AMINO DERIVATIVES OF 5α-ANDROSTAN-3β-OL
Nadaraia, N. Sh.,Sladkov, V. I.,Kuleshova, L. N.,Suvorov, N. N.
, p. 481 - 485 (2007/10/02)
The epimeric 17α- and 17β-amino-5α-androstan-3β-ols were synthesized from 3β-acetoxy-5α-androstan-17-one.The configurations at the C17 atom were demonstrated by the 1H NMR method.
Process for the preparation of 17β-hydroxy-3-oxo-17α-pregn-4-ene-21-carboxylic acid γ-lactone
-
, (2008/06/13)
A new process utilizing certain novel intermediates for the preparation of 17β-hydroxy-3-oxo-17α-pregn-4-ene-21-carboxylic acid γ-lactone is described herein. The procedure utilizes readily available and inexpensive sarsasaponin as starting material.
