Triisopropylsilyl (TIPS) Alkynes as Building Blocks for Syntheses of Platinum Triisopropylsilylpolyynyl and Diplatinum Polyynediyl Complexes
Triisopropylsilyl (TIPS) Alkynes as Building Blocks for Syntheses of Platinum Triisopropylsilylpolyynyl and Diplatinum Polyynediyl Complexes
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三异丙基甲硅烷基 (TIPS) 炔烃作为合成铂三异丙基甲硅烷基聚炔基和二铂聚炔二基络合物的结构单元
DOI:
10.1021/acs.organomet.9b00368
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发表时间:
2019
期刊:
影响因子:
2.8
通讯作者:
Gladysz, John A.
中科院分区:
文献类型:
--
作者:
Weisbach, Nancy;Kuhn, Helene;Amini, Hashem;Ehnbom, Andreas;Hampel, Frank;Reibenspies, Joseph H.;Hall, Michael B.;Gladysz, John A.
Hay oxidative cross coupling (O2/CuCl/TMEDA) oftrans-(p-tol)(p-tol3P)2Pt(C≡C)2H (PtTC4H) and excess H(C≡C)2Si-i-Pr3(TIPSC4H) givesPtTC8TIPS(55%). Subsequent addition ofn-Bu4N+F–and repetition of the Hay protocol yieldsPtTC12TIPS(56%) and the byproducttrans-i-Pr3Si(C≡C)2(p-tol3P)2Pt(C≡C)6Si-i-Pr3(TIPSC4PtC12TIPS, 5%); another cycle givesPtTC16TIPS(13%). Analogous cross couplings oftrans-(C6F5)(p-tol3P)2Pt(C≡C)2H (PtFC4H) and excessTIPSCxHyieldPtFC6TIPS(x= 2, 58%) andPtFC8TIPS(x= 4, 23%). Each is treated withn-Bu4N+F–, and repetition of the Hay protocol withTIPSC4HgivesPtFC10TIPS(58%) andPtFC12TIPS(47%). When the Hay conditions are applied toPtFCxTIPS(x= 6, 8, 10, 12) without a cross-coupling partner, homocoupling toPtFC2xPtFoccurs (68–99%). The reaction oftrans-(p-tol3P)2PtCl2andTIPSC4H(4.5 equiv; cat. CuI, CH2Cl2/HNEt2) yieldsTIPSC4PtC4TIPS(95%). Hay cross coupling ofHC4PtC4Hand excessTIPSC4HgivesTIPSC4PtC4TIPS(6%),TIPSC4PtC8TIPS(12%),TIPSC8PtC8TIPS(10%),TIPSC4PtC12TIPS(7%), andTIPSC8PtC12TIPS(3%). Although TIPS can be a superior protecting group, it offers no advantage vs triethylsilyl in the preceding reactions. The crystal structures ofPtTC8TIPS,PtTC12TIPS,PtFC6TIPS,PtFC8TIPS,TIPSC4PtC4TIPS,TIPSC8PtC8TIPS,TIPSC4PtC12TIPS. andPtFC20PtFare determined. The last is the longest dimetallapolyyne so characterized to date. The13C NMR chemical shifts of the sp carbon atoms are accurately modeled by DFT calculations.
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DOI:
10.1039/p29720000030
发表时间:
1972
期刊:
Journal of The Chemical Society-perkin Transactions 1
影响因子:
--
作者:
B. Mann
通讯作者:
B. Mann
影响因子:
3
作者:
W. Hersh
通讯作者:
W. Hersh
DOI:
10.1002/cber.19861190521
发表时间:
1986
期刊:
Chemische Berichte
影响因子:
--
作者:
H. Alt;R. Baumgärtner;H. Brune
通讯作者:
H. Brune
影响因子:
2.8
作者:
Clough, Melissa C.;Zeits, Paul D.;Gladysz, John A.
通讯作者:
Gladysz, John A.
影响因子:
3.6
作者:
Kohn, Daniel R.;Gawel, Przemyslaw;Anderson, Harry L.
通讯作者:
Anderson, Harry L.