The evaluation of linear electric field effects on carbon-13 chemical shifts. An example for linear field effects on quaternary carbon atoms

Analysis of substituent effects on the c

Analysis of substituent effects on the carbon-13 and oxygen-17 NMR chemical shifts of some phenylthiophen-2′-ylmethanones by linear free energy relationships

✍ Renato Noto; Michelangelo Gruttadauria; Stefano Chimichi; Giovanni Petrillo; Dom 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 88 KB 👁 2 views

The 13 C chemical shifts of the title compounds (1) were determined in CDCl 3 and in CD 3 OD as well as in D 2 SO 4 solutions. Moreover 17 O chemical shifts of 1 in CDCl 3 were measured. The SCS (substituent-induced chemical shift) values were analyzed by means of linear free energy (LFE) relationsh