Zur Strukturaufklärung der Bromierungsprodukte von N‐Aryl‐2,4‐dimethyl‐buta‐1,3‐dien‐sultamen‐1,4

Abstract

Structure Elucidation of Bromination Products of N‐Aryl‐2, 4‐dimethyl‐buta‐1,3‐diene‐sultames‐1, 4 The structure of bromination products of N‐aryl‐2, 4‐dimethyl‐buta‐1, 3‐diene‐sultames‐1, 4 1a–d, f is determined by 13‐C‐n.m.r. spectroscopy. As mono bromination product of N‐phenylsultam 1a the 4‐bromomethyl derivative 2a was isolated. Dibromination of sultames 1 yields 1‐brom‐4‐brommethyl‐sultames 3 and by tribromination 1,3‐dibrom‐4‐brommethyl‐sultames 4 are obtained.

Synthesis and Study of New N-Aryl Pyrroles

“…Helferich and co-workers [6,10] were able to synthesize (2,4-dimethyl pyrroles) from the corresponding (N-aryl-2,4-dimethyl butadiene-1,4-sultam) Using copper lead oxide as heat conductors. In this work a number of new pyrroles were synthesized from the heating of compound (1), (2) and (3) in the presence of copper using DMSO as reaction medium, the heating is continued until the splitting of SO 2 was diminished, giving compounds (4, 5 and 6).…”

“…Insecticides are claimed to be a major factor behind the increase in agricultural 20th century's productivity. [3b] the synthesis of first series of (1,8-naphtho sultone) was reported by Erdmann [4] a number of mono and bithaizine sultams have been known [5,6,7]. These compounds were prepared from aromatic primary amines and sultones.…”