摘要:
Nitration of asymmetric hydrazones with nitric oxide occurred stereoselectively at C1'-atom, giving mono-nitrated trans isomer as a major outcome. The ratio of trans to cis was up to >99. Higher isolated yields of nitrated products and higher trans/cis ratios of isomers suggest that this procedure offers advantages for synthesizing asymmetry nitro compounds. (C) 2007 Elsevier Ltd. All rights reserved.