Scheme 2.
Control Experimentsa
aReagents: (cond A) 10 mol % A, 30 mol % HBD3, 40 mol % i-Pr2Net, 72 h; (cond B) 10 mol % A, 30 mol % HBD3, 10 equiv EtOH; (cond C) 10 mol % A, 30 mol % HBD3, 40 mol % i-Pr2NEt, 5 mol % DMAP.
Control Experimentsa
aReagents: (cond A) 10 mol % A, 30 mol % HBD3, 40 mol % i-Pr2Net, 72 h; (cond B) 10 mol % A, 30 mol % HBD3, 10 equiv EtOH; (cond C) 10 mol % A, 30 mol % HBD3, 40 mol % i-Pr2NEt, 5 mol % DMAP.