Fig. 7: Investigation on relative reactivity and site-selectivity of C(sp3)–H bonds with donor silver carbenes.
From: Silver-catalyzed site-selective C(sp3)−H benzylation of ethers with N-triftosylhydrazones

a Relative reactivities of C(sp3)–H bonds towards the donor silver carbene derived from 2a. b Relative reactivities of different silver carbenes towards ether α-C–H bonds. c Site-selectivity investigation of C(sp3)–H bonds with subtle electronic and steric differences adjacent to ether oxygen. r.r., regioisomeric ratio; n.r., normalized regioselectivity; d.r., diastereomeric ratio.