Studies on cycloimmonium ylides: synthesis of some new 2,4,6-trisubstituted pyridines. 2
作者:Ram S. Tewari、Suresh C. Chaturvedi、Dinesh K. Nagpal
DOI:10.1021/je60086a032
日期:1980.7
TEWARI R. S.; CHATUROEDI S. C.; NAGPAL D. K., J- CHEM. AND ENG. DATA, 1980, 25, NO 3, 293-295
作者:TEWARI R. S.、 CHATUROEDI S. C.、 NAGPAL D. K.
DOI:——
日期:——
Studies of NMR Chemical Shifts of Chalcone Derivatives of Five‐membered Monoheterocycles and Determination of Aromaticity Indices
作者:Eun Jeong Jeong、In‐Sook Han Lee
DOI:10.1002/bkcs.11749
日期:2019.7
(E)‐1‐heteroaryl‐3‐arylpropen‐1‐ones. The 13C chemicalshift values (δC) of the chalcone derivatives were determined in order to find if they correlated with the Hammett σ values. A good correlation, especially for the β‐C for both series, was found for the 13C chemicalshift values (δC) of the chalcone derivatives with the Hammett σ values. The chemicalshift values of the β‐C of the heterocyclic compounds