Table 2 Polycondensation of P1 in classic Stille coupling between E2 and N1a.

From: Efficient room temperature catalytic synthesis of alternating conjugated copolymers via C-S bond activation

View full size image

Entry

Catalyst

Temperature

Mn/Mw (kDa)

Đ

Yieldb(%)

1

Pd(PPh3)4

R.T.

-

-

0

2

Pd(PPh3)4

100 oC

11.1/46.1

4.17

82

3c

Pd(PPh3)4, CuTc

100 oC

7.5/22.6

3.04

61

  1. Reaction conditions: aPd catalyst (10 mol%), E1 (1 equiv, 0.025 M) and N1 (1 equiv, 0.025 M) in solvent under N2 at room temperature (entry 1) or 100 oC (entry 2).
  2. bYield collected from chloroform fraction.
  3. cCuTc (5 equiv.), 100 °C.
Back to article page