Catalytic Addition of Nitroalkanes to Unactivated Alkenes via Directed Carbopalladation

31 January 2022, Version 1
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

We report a redox-neutral catalytic coupling of nitroalkanes and unactivated alkenes that proceeds by a directed carbopalladation mechanism. The reaction is uniquely enabled by the combination of PdI2 as the precatalyst and HFIP solvent. Structurally complex nitroalkane products, including nitro-containing carbo- and heterocycles, are prepared under operationally convenient conditions without the need for toxic or corrosive reagents. Deuterium labeling experiments and isolation of a catalytically relevant intermediate shed light on the reaction mechanism. By taking advantage of different catalytic activation modes, we demonstrate orthogonal methods for site-selective functionalization of a polyfunctional nitroalkyl ketone.

Keywords

palladium
directing group
nitroalkane
alkene functionalization

Supplementary materials

Title
Description
Actions
Title
Supporting Information
Description
Experimental Procedures, Copies of NMR Spectra, and Crystallographic Data
Actions
Title
5a_CIF
Description
Crystallographic Information File for Compound 5a
Actions
Title
Pd-1_CIF
Description
Crystallographic Information File for Compound Pd-1
Actions
Title
S1_CIF
Description
Crystallographic Information File for Compound S1
Actions
Title
NMR Data
Description
Copies of NMR Data in MNova Format
Actions

Comments

Comments are not moderated before they are posted, but they can be removed by the site moderators if they are found to be in contravention of our Commenting Policy [opens in a new tab] - please read this policy before you post. Comments should be used for scholarly discussion of the content in question. You can find more information about how to use the commenting feature here [opens in a new tab] .
This site is protected by reCAPTCHA and the Google Privacy Policy [opens in a new tab] and Terms of Service [opens in a new tab] apply.