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. Author manuscript; available in PMC: 2018 Jan 23.
Published in final edited form as: J Am Chem Soc. 2017 Apr 18;139(16):6008–6016. doi: 10.1021/jacs.7b02512
10 R1=Ph R2=Ph R3=H 99 % y
11 R1=Bn R2=p-BrC6H4 R3=H 73 % y
12 R1=p-MeC6H4 R2=p-MeC6H4 R3=H 88 % y
13 R1=p-OMeC6H4 R2=Ph R3=H 76 % y
14 R1=p-OMeC6H4 R2=p-FC6H4 R3=H 94 % y
15 R1=p-OMeC6H4 R2=1-naphthyl R3=H 99 % y
16 R1=p-OMeC6H4 R2=m-CF3C6H4 R3=H 96 % y
17 R1=p-OMeC6H4 R2=p-OMeC6H4 R3=H 64 % y
18 R1=p-CF3C6H4 R2=p-OMeC6H4 R3=H 99 % y
19 R1=p-OMeC6H4 R2=mesityl R3=H 77 % y
20 R1=p-FC6H4 R2=Ph R3=H 91 % y
21 R1=Ph R2=Ph R3=Me 48 % y
22 R1=Bn R2=Ph R3=Ph 64 % y
23 R1=Bn R2=Ph R3=Me 94 % y
24 R1=Ph R2=p-Ts R3=H <5%y