175021-27-9Relevant articles and documents
A novel furan ring construction and syntheses of 4- and 4,5-substituted 2-(α-heterocycloalkyl)furans
Katritzky,Li
, p. 638 - 643 (1995)
4-Substituted and 4,5-disubstituted 2-(benzotriazol-1-ylmethyl)furans 3 have been prepared in good yields from 1-propargylbenzotriazole (1) and α-bromo ketones via one-pot processes. The 2-(benzotriazol-1-ylmethyl) side chain of 3 was alkylated by lithiat
General and Efficient Approaches to Fused [l,2-a]Pyrroles and [1,2-a]Indoles
Katritzky, Alan R.,Fali, Clara N.,Li, Jianqing
, p. 4148 - 4154 (2007/10/03)
2-[(Benzotriazol-l-yl)methyl]pyrroles 4a-c, and 15a,b and -indoles 23, prepared as previously reported,1-2 were converted into the corresponding fused [1,2-a]pyrroles 8a-c, and 18a,b and fused [1,2-a]indoles 25, 27 by intramolecular cyclizations; the form
1,4-Disubstituted and 1,4,5-trisubstituted 2-[(benzotriazol-1-yl)methyl]pyrroles as versatile synthetic intermediates
Katritzky, Alan R.,Li, Jianqing
, p. 1624 - 1628 (2007/10/03)
The CH2Bt substituent, unlike previously used CH2X substituents, enables (i) the synthetic elaboration of pyrroles with unsubstituted ring positions and (ii) electrophilic as well as nucleophilic substitutions to give pyrroles of typ
A new indole synthesis via [3 + 3] annulation of 2-(benzotriazol-1-ylmethyl)pyrroles with α,β-unsaturated aldehydes and ketones
Katritzky, Alan R.,Levell, Julian R.,Li, Jianqing
, p. 5641 - 5644 (2007/10/03)
Poly-substituted indoles are readily accessible from substituted 2-(benzotriazol-1-ylmethyl)pyrroles by lithiation, reaction with α,β-unsaturated aldehydes and ketones, and subsequent facile dehydrobenzotriazolylation-cyclodehydration. The substituted 2-(
