Imidazo[1,2-a]benzimidazole derivatives: XXIX. 1-allyl-2-amino-3-acylmethylbenzimidazolium halides and syntheses on their base

Anisimova, V. A.; Толпыгин, И. Е.

doi:10.1134/s1070428011090168

Cited by 5 publications

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“…[23][24][25] Analogous compounds were also synthesised by cyclisation of a chlorobenzimidazole intermediate prepared with the use of phosphoryl chloride. The method was based on the intramolecular cyclisation of appropriate 2-(chloroalkylamino)benzimidazoles 21.…”

Section: Halogens As Functional Group Xmentioning

confidence: 99%

Synthetic Strategies for Preparing Bicyclic Guanidines

Lemrová

Soural

2015

Eur J Org Chem

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Different synthetic approaches leading to compounds containing bicyclic guanidine scaffolds are summarised. Because of the diversity within this group of target molecules and the wide range of individually reported synthetic routes, this review is divided into three subsections according to the key intermediate used to obtain the bicyclic structure. The first section is dedicated to strategies in which monocyclic guanidine derivatives are used as the key intermediates. The second section presents direct syntheses of bicyclic guanidines from acyclic or non‐guanidine starting materials. The last part of the text addresses the synthesis of target compounds through the use of polymer‐supported chemistry. The applicability of each synthetic approach for the preparation of target molecules with certain x+y combinations of individual cycles is specified.

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Section: Halogens As Functional Group Xmentioning

confidence: 99%