Synlett 2021; 32(07): 655-662
DOI: 10.1055/s-0040-1707297
account

Opportunities Using Boron to Direct Reactivity in the Organic Solid State

Authors


We thank the National Science Foundation, Division of Chemistry (Grant Number CHE-1828117) and the National Science Foundation, Division of Materials Research (Grant Number (DMR-1708673) and the Consejo Nacional de Ciencia y Tecnología (CONACyT) for financial support.


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Abstract

This Account describes work by our research group that highlights opportunities to utilize organoboron molecules to direct chemical reactivity in the organic solid state. Specifically, we convey a previously unexplored use of hydrogen bonding of boronic acids and boron coordination in boronic esters to achieve [2+2]-photocycloadditions in crystalline solids. Organoboron molecules act as templates or ‘shepherds’ to organize alkenes in a suitable geometry to undergo regio- and stereoselective [2+2]-photocycloadditions in quantitative yields. We also provide a selection of publications that served as an inspiration for our strategies and offer challenges and opportunities for future developments of boron in the field of materials and solid-state chemistry.

1 Introduction

1.1 Template Strategy for [2+2]-Photocycloadditions in the Solid State

2 Boronic Acids as Templates for [2+2]-Photocycloadditions in the Solid State

2.1 Supramolecular Catalysis of [2+2]-Photocycloadditions in the Solid State Using Boronic Acids

3 Boronic Esters as Templates for [2+2]-Photocycloadditions in the Solid State

3.1 Application of Photoproducts: Separation of Thiophene from Benzene through Crystallization

3.2 Crystal Reactivity of B←N-Bonded Adducts: The Case of Styryl­thiophenes

4 Conclusions and Perspectives



Publikationsverlauf

Eingereicht: 18. Juni 2020

Angenommen nach Revision: 26. August 2020

Artikel online veröffentlicht:
09. Oktober 2020

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