Online article for Non-subscribers

Pay per view

Heterocycles has a pay-per-view service for Non-subscribers.
You will be able to directly purchase the full text article through PayPal.
Your purchased Paper can be downloaded after the payment is completed.
An e-mail will be sent the URL to download the paper.
If you have any questions, please contact:

Price: ¥ 4,400 (Yen only)
Period: This Article can be accessed for 7 days.

Report | Regular issue | Vol 23, No. 11, 1985, pp.2895-2906
Published online, 1st January, 1970
DOI: 10.3987/R-1985-11-2895
Synthesis by Phase Transfer Catalysis of N-Benzyl, N-Diphenylmethyl and N-Triphenylmethyl Azoles and Benzazoles: Proton NMR and Chromatographic Data as a Tool for Identification

Rosa Ma. Claramunt,* José Elguero, and Rafael Garceran

*Química Orgánica, Universidad Nacional de Educacíon a Distancia, Cantoblanco, 28049-Madrid, Spain


Pyrazole, imidazole, 1,2,4-triazole, indazole and benzotriazole were alkylated under phase transfer catalysis (PTC) with benzyl-, diphenylmethyl- and trityl chloride. Alkylation occurred only at the ring nitrogen atoms of the heterocycle, except for indazole in which substitution took also place at position 3. A systematic study of the N- and C-substituted derivatives by proton NMR and chromatographic techniques has been done.