Synthesis 2021; 53(08): 1478-1488
DOI: 10.1055/s-0040-1705988
paper

Synthesis of Nitrogen- and Oxygen-Containing Heterocycles by Prins Cyclization in Continuous Flow

Armando Talavera-Alemán
,
Jérome Marrot
,
,
Christine Thomassigny
A.T.A. is grateful to CONACYT-Mexico for the grant 740484.


Abstract

Aza-silyl-Prins and oxa-Prins cyclization reactions in continuous-flow chemistry are described for the synthesis of the corresponding tetrahydropyridines and pyran derivatives, respectively. In particular, the use of pyridine-carboxaldehydes for aza-silyl-Prins reaction led to either a symmetrical triarylmethane or two new bicyclic compounds. 4-Fluorinated-2-substituted tetrahydropyran derivatives were also obtained in the oxa-Prins cyclization with good selectivity in favor of the anti-isomer.

Supporting Information



Publication History

Received: 04 September 2020

Accepted after revision: 09 November 2020

Article published online:
07 December 2020

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