Rate constants and Arrhenius parameters for H-atom abstraction from Bu 3 SnH by the 2,2-dimethylvinyl radical in PhMe. Kinetic evidence for an entirely free radical mechanism for the O-directed hydrostannation of alkynols with stannanes and Et 3 B/O 2
Year: 2025
Type: article
Abstract: Using the radical 2a as a clock for the 2,2-dimethylvinyl radical 6, a k H-atom abstraction Bu 3 SnH of 2.01 × 10 8 mol −1 s −1 has been estimated for 6 in PhMe at 298 K. The log A of 14.95 for the ring-opening of 2a confirms it is entirely free radical.
Source: Organic & Biomolecular Chemistry
DOI: 10.1039/d4ob01846j
Authors: Hamish A. Watson, K. Lawrence E. Hale, K. Lawrence E. Hale, John M. Marron, Soraya Manaviazar, Alistair J. Fielding, Karl J. Hale, Karl J. Hale
Institutions: Queen's University Belfast, Liverpool John Moores University
Language: English
Topic: Chemical Reaction Mechanisms
Subfield: Organic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: hybrid
Awards: G4363165972, G5200278345
OpenAlex ID: W4409435360