TY - JOUR
T1 - Alkynylbis(alkylidynyl)phosphines
T2 - {LnMC}2PCCR
AU - Frogley, Benjamin J.
AU - Hill, Anthony F.
N1 - Publisher Copyright:
© The Royal Society of Chemistry.
PY - 2018
Y1 - 2018
N2 - Sequential treatment of [M(CBr)(CO)2(Tp*)] (M = Mo, W; Tp* = hydrotris(dimethylpyrazolyl)borate) with nBuLi, RPCl2 and LiCCSiMe3 affords [M{CPR(CCSiMe3)}(CO)2(Tp*)] (R = Ph, Cy) which are readily desilylated (TBAF) to provide the parent ethynyl derivatives [M{CPR(CCH)}(CO)2(Tp*)]. Alternatively, treating [W(CBr)(CO)2(Tp*)] with nBuLi, 1/2 PCl3 and LiCCR′ affords the alkynylbis(alkylidynyl)phosphines [R′CCP{CW(CO)2(Tp*)}2] (R′ = C6H5, C6H4Me-4, CMe3, SiMe3) and again the silyl derivative may be desilylated to the parent (R′ = H) which is readily converted to an arsino derivative (R′ = AsPh2). These novel architectures present new linkages for bridge-assisted polymetallic assembly.
AB - Sequential treatment of [M(CBr)(CO)2(Tp*)] (M = Mo, W; Tp* = hydrotris(dimethylpyrazolyl)borate) with nBuLi, RPCl2 and LiCCSiMe3 affords [M{CPR(CCSiMe3)}(CO)2(Tp*)] (R = Ph, Cy) which are readily desilylated (TBAF) to provide the parent ethynyl derivatives [M{CPR(CCH)}(CO)2(Tp*)]. Alternatively, treating [W(CBr)(CO)2(Tp*)] with nBuLi, 1/2 PCl3 and LiCCR′ affords the alkynylbis(alkylidynyl)phosphines [R′CCP{CW(CO)2(Tp*)}2] (R′ = C6H5, C6H4Me-4, CMe3, SiMe3) and again the silyl derivative may be desilylated to the parent (R′ = H) which is readily converted to an arsino derivative (R′ = AsPh2). These novel architectures present new linkages for bridge-assisted polymetallic assembly.
UR - http://www.scopus.com/inward/record.url?scp=85055646992&partnerID=8YFLogxK
U2 - 10.1039/c8cc07166g
DO - 10.1039/c8cc07166g
M3 - Article
SN - 1359-7345
VL - 54
SP - 12373
EP - 12376
JO - Chemical Communications
JF - Chemical Communications
IS - 87
ER -