Scheme 28.

Suzuki-Miyaura cross-coupling of tosylates generated in situ from 86.

	R	Ar	%Yield
87a	C6H5	-C6H5	85
87b	-C6H5	4-MeC6H4-	88
87c	-C6H5	4-MeOC6H4-	90
87d	-C6H5	4-ClC6H4-	79
87e	4-MeC6H4-	-C6H5	83
87f	4-MeC6H4-	4-MeC6H4-	85
87g	4-MeC6H4-	4-MeOC6H4-	85
87h	4-MeC6H4-	4-ClC6H4-	79
87i	4-MeOC6H4-	-C6H5	81
87j	4-MeOC6H4-	4-ClC6H4-	75
87k	4-MeOC6H4-	4-MeC6H4-	83
87l	4-ClC6H4-	-C6H5	85
87m	4-ClC6H4-	4-ClC6H4-	80
87n	4-ClC6H4-	4-MeC6H4-	90
87o	4-ClC6H4-	4-MeOC6H4-	75
87p	-CH2CH2CH3	-C6H5	63
87q	-CH(CH3)2	-C6H5	43

Reagents and Conditions: (i) ArB(OH)₂, K₂CO₃, PdCl₂(PPh₃)₂, TsCl, THF–H₂O (20:1, v/v), 60 °C.