Synthesis 2017; 49(11): 2435-2442
DOI: 10.1055/s-0036-1588739
paper
© Georg Thieme Verlag Stuttgart · New York

An Efficient Synthesis of 3-Phosphorylated Benzoxaboroles via the Pudovik Reaction

Prashantha Kamath
a   Syngenta Biosciences Pvt. Ltd., Santa Monica Works, Corlim,Ilhas, Goa 403110, India   eMail: mukul.lal@syngenta.com
,
Ramya Rajan
a   Syngenta Biosciences Pvt. Ltd., Santa Monica Works, Corlim,Ilhas, Goa 403110, India   eMail: mukul.lal@syngenta.com
,
Sudhindra H. Deshpande
a   Syngenta Biosciences Pvt. Ltd., Santa Monica Works, Corlim,Ilhas, Goa 403110, India   eMail: mukul.lal@syngenta.com
,
Mark Montgomery
b   Syngenta Jealott’s Hill International Research Centre, Bracknell, Berkshire RG42 6EY, UK
,
Mukul Lal*
a   Syngenta Biosciences Pvt. Ltd., Santa Monica Works, Corlim,Ilhas, Goa 403110, India   eMail: mukul.lal@syngenta.com
› Institutsangaben
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Publikationsverlauf

Received: 10. Dezember 2016

Accepted after revision: 10. Februar 2017

Publikationsdatum:
14. März 2017 (online)


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Dedicated to Prof. Dr. Michael Schmittel on the occasion of his 60th birthday

Abstract

A simple, fast and efficient synthesis of 3-phosphorylated benzoxaboroles using the Pudovik reaction is reported. A number of diverse 3-(dialkoxyphosphoryl)-1-hydroxy-3H-2,1-benzoxaboroles were synthesised in 70–86% yield. Interesting hydrogen bond features were observed in the crystal lattice of the 5-chlorinated 3-bis(benzyl­oxy)phosphoryl derivative with both inter- and intramolecular C–H···O hydrogen bonds. Additionally, linear chains of intermolecular O–H···O hydrogen bonds were observed.

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