Studies on the γ-effects. Part 3. Variations in the γ-effects ofN-substituted benzylamines,o-aminomethylphenols and 3,4-dihydro-2H-1,3-benzoxazines against theEs′substituent constants

Studies on the benzoxazine series. Part

Studies on the benzoxazine series. Part 3—Preparation and 13C NMR structural Study of γ Effects of Some N-substituted 3,4-dihydro-2H-1,3-benzoxazines

✍ Kari Neuvonen; Kalevi Pihlaja 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 English ⚖ 623 KB

## Abstract Seventeen __N__‐substituted 3,4‐dihydro‐2__H__‐1,3‐benzoxazines [__N__‐substituent = Et, Pr^__i__^, Bu^__t__^, CH~2~C~6~H~5~ or CH(CH~3~)C~6~H~5~] were prepared and their structures studied in the light of ^13^C chemical shifts. The γ effects caused by C(α)‐methyl or C(α)‐phenyl substit