Abstract
A hindered imidazolinium chloride which is a bulky, strongly donating N-heterocyclic carbene precursor has been synthesised from pinacolone in six steps. The chlorides can be easily converted to its corresponding hexafluorophosphate salt in near quantitative yield. The two new compounds were characterised by 1H and 13C NMR, IR, and elemental analyses.
Keywords
References
1.
Trnka T.M.
, and
Grubbs R.H.
, Acc. Chem. Res. , 2001 , 34 , 18 .
2.
Martin R.
, and
Buchwald S.L.
, Acc. Chem. Res. , 2008 , 41 , 1461 .
3.
Díez-González S.
,
Marion N.
, and
Nolan S.P.
, Chem. Rev. , 2009 , 109 , 3612 .
4.
Jones W.D.
, J. Am. Chem. Soc. , 2009 , 131 , 15075 .
5.
Hahn F.E.
, and
Jahnke M.C.
, Angew. Chem. Int. Ed. , 2008 , 47 , 3122 .
6.
Herrmann W.A.
,
Elison M.
,
Fischer J.
,
Koecher C.
, and
Artus G.R.J.
, Angew. Chem. Int. Ed. , 1995 , 34 , 2371 .
7.
Hillier A.C.
,
Grasa G.A.
,
Viciu M.S.
,
Lee H.M.
,
Yang C.
, and
Nolan S.P.
, J. Organomet. Chem. , 2002 , 653 , 69 .
8.
Fernandez-Rodriguez M.A.
, and
Hartwig J.F.
, J. Org. Chem. , 2009 , 74 , 1663 .
9.
Cao C.
,
Wang L.
,
Cai Z.
,
Zhang L.
,
Guo J.
,
Pang G.
, and
Shi Y.
, Eur. J. Org. Chem. , 2011 , 8 , 1570 .
10.
Shi Y.
,
Cai Z.
,
Guan P.
, and
Pang G.
, Synlett , 2011 , 14 , 2090 .
11.
Timberlake J.W.
,
Alender J.
,
Garner A. W.
, and
Hodges M. L.
, J. Org. Chem. , 1981 , 46 , 2082 .
