1: acetonitrile; methanol 2: N(C2H5)3 / acetonitrile 3: N(C2H5)3 / acetonitrile View Scheme

N(C2H5)3 in acetonitrile byproducts: N(C2H5)3*HCl, 1,3-dioxacycloheptan-2-one, 2-(β-diphenylphosphine)ethylpyridine; (N2); addn. of PPh3 (excess) and NEt3 to suspn. of PdCl(PPh2CH2CH2C5H4N)(COOCH2CH2CH2CH2OH) in CH3CN; heating at 60°C for 3 h; pptn.;