107484-30-0Relevant articles and documents
Synthesis of N-alkyl pyrroles via decarboxylation/dehydration in neutral ionic liquid under catalyst-free conditions
Yadav, Veena D.,Dighe, Shashikant U.,Batra, Sanjay
, p. 57587 - 57590 (2015/01/08)
A general route to N-alkyl pyrroles by reacting aromatic, heteroaromatic or aliphatic aldehydes with 4-hydroxyproline in ionic liquid under neutral condition was developed. The ionic liquid can be readily recovered and reused for up to 5 reaction cycles without any effect on the yield of the product formed. The utility of the protocol for the one-pot synthesis of 9H-benzo[e]pyrrolo[2,1-b][1,3]oxazines is also presented.
Synthesis and nuclear magnetic resonance spectroscopic studies of 1- arylpyrroles
Lee, Chang Kiu,Jun, Jung Ho,Yu, Ji Sook
, p. 15 - 24 (2007/10/03)
A series of m- and p-substituted 1-phenyl, 1-benzyl, 1-benzoyl, and 1- (2-phenylethyl)pyrroles was prepared and their 1H and 13C nmr spectroscopic characteristics were examined. In general, good correlations were observed between the chemical shift values of the β-H and the β-C of pyrroles [except 1-(2-phenylethyl)pyrroles] and the Hammettt σ. The observation may be explained in terms of the electronic effects of the substituents which are transmitted through bonds and through space by interaction of the p orbitals between β-Cs of the pyrrole ring and m- and p- Cs of the phenyl ring. Substituent constants of 1-pyrrolyl, 1-pyrrolylmethyl, and 1-pyrroloyl groups for the 1H and 13C chemical shifts of phenyl ring are also presented.
