Table 1.

Coupling of 2-ONN derivatives 1a–c with different organohalides.

Entry	Deriv.a	Coupling agent	Producta,b	% Yieldc
1	1a–c			2a: 66
				2b: 58
				2c: 62
2	1a–c			3a: 87
				3b: 70
				3c: 51
3	1a			66
4	1a			80
5	1b,c			6b: 57
				6c: 53
6	1a–c		d	7a: 76
				7b: 62
				7cAc: 45
7	1a–c			8a: 74
				8b: 88
				8c: 82
8	1a			82
9	1a			73

^aa: Ar = Py; Ar′ = PhCl, b: Ar = Th; Ar′ = PhPr, c: Ar = Ar′ = Th.

^bGlc: glucosyl, Gal: galactosyl, Lac: lactosyl.

^cCoupling yield before deprotection.

^dCoupling product was not deacetylated for 7c_Ac.