-
6
-
-
0000999555
-
-
Pioneering Lewis acid or Lewis base catalysis with Si enolates with aldehydes:
-
Pioneering Lewis acid or Lewis base catalysis with Si enolates with aldehydes:. Mukaiyama T., Narasaka K., and Banno K. Chem. Lett. (1973) 1011
-
(1973)
Chem. Lett.
, pp. 1011
-
-
Mukaiyama, T.1
Narasaka, K.2
Banno, K.3
-
13
-
-
33947572491
-
-
Song J.J., Tan Z., Reeves J.T., Yee N.K., and Senanayake C.H. Org. Lett. 9 (2007) 1013
-
(2007)
Org. Lett.
, vol.9
, pp. 1013
-
-
Song, J.J.1
Tan, Z.2
Reeves, J.T.3
Yee, N.K.4
Senanayake, C.H.5
-
18
-
-
43549103389
-
-
N-Heterocyclic carbene-catalysis:
-
N-Heterocyclic carbene-catalysis:. Song J.J., Tan Z., Reeves J.T., Fandrick D.R., Yee N.K., and Senanayake C.H. Org. Lett. 10 (2008) 877
-
(2008)
Org. Lett.
, vol.10
, pp. 877
-
-
Song, J.J.1
Tan, Z.2
Reeves, J.T.3
Fandrick, D.R.4
Yee, N.K.5
Senanayake, C.H.6
-
26
-
-
56249148856
-
-
Very recently, Shibasaki and Matsunaga et al. used 1,2-bis(diphenylphosphoryl)benzene as a Lewis base co-catalyst in the La(III)-catalyzed diastereoselective Mannich-type reaction.
-
Very recently, Shibasaki and Matsunaga et al. used 1,2-bis(diphenylphosphoryl)benzene as a Lewis base co-catalyst in the La(III)-catalyzed diastereoselective Mannich-type reaction. Morimoto H., Yoshino T., Yukawa T., Lu G., Matsunaga S., Shibasaki M. Angew. Chem., Int. Ed. 47 (2008) 9125
-
(2008)
Angew. Chem., Int. Ed.
, vol.47
, pp. 9125
-
-
Morimoto, H.1
Yoshino, T.2
Yukawa, T.3
Lu, G.4
Matsunaga, S.5
Shibasaki, M.6
-
30
-
-
19844367398
-
-
Phosphazene base-catalysis with TMS compounds:
-
Phosphazene base-catalysis with TMS compounds:. Ueno M., Hori C., Suzawa K., Ebisawa M., and Kondo Y. Eur. J. Org. Chem. (2005) 1965
-
(2005)
Eur. J. Org. Chem.
, pp. 1965
-
-
Ueno, M.1
Hori, C.2
Suzawa, K.3
Ebisawa, M.4
Kondo, Y.5
-
33
-
-
0001217854
-
-
Ring opening reaction of epoxides with KCN-18-crown-6 complex:
-
Ring opening reaction of epoxides with KCN-18-crown-6 complex:. Sassaman M.B., Prakash G.K.S., and Olah G.A. J. Org. Chem. 55 (1990) 2016
-
(1990)
J. Org. Chem.
, vol.55
, pp. 2016
-
-
Sassaman, M.B.1
Prakash, G.K.S.2
Olah, G.A.3
-
34
-
-
67349128890
-
-
note
-
In this reaction, the possibility of self-catalysis by in situ generating aldolate had been denied. See Ref. 6.
-
-
-
-
38
-
-
0000532024
-
-
Diastereoselective cyanation of ketones with lithium alkoxide complexes:
-
Diastereoselective cyanation of ketones with lithium alkoxide complexes:. Wilkinson H.S., Grover P.T., Vandenbossche C.P., Bakale R.P., Bhongle N.N., Wald S.A., and Senanayake C.H. Org. Lett. 3 (2001) 553
-
(2001)
Org. Lett.
, vol.3
, pp. 553
-
-
Wilkinson, H.S.1
Grover, P.T.2
Vandenbossche, C.P.3
Bakale, R.P.4
Bhongle, N.N.5
Wald, S.A.6
Senanayake, C.H.7
-
40
-
-
67349248368
-
-
note
-
Catalyst 1 was less active than 2a or 2b. In the reaction between 3b and 16, both 17a and deprotected product 20a were obtained in 92% yield (17a:20a = ca. 4:1).
-
-
-
-
41
-
-
67349092749
-
-
note
-
This result was in sharp contrast to that with the Mukaiyama aldol reaction (see Table 1). Other catalysts such as KOAc-18-crown-6 and KF-18-crown-6 showed almost no reactivity under the same reaction conditions. KOPh or KOt-Bu without 18-crown-6 also showed no reactivity.
-
-
-
-
43
-
-
0032497716
-
-
Simoni D., Invidiata F.P., Manferdini M., Lampronti I., Rondanin R., Roberti M., and Pollini G.P. Tetrahedron Lett. 39 (1998) 7615
-
(1998)
Tetrahedron Lett.
, vol.39
, pp. 7615
-
-
Simoni, D.1
Invidiata, F.P.2
Manferdini, M.3
Lampronti, I.4
Rondanin, R.5
Roberti, M.6
Pollini, G.P.7
-
44
-
-
0034603590
-
-
Simoni D., Rondanin R., Morini M., Baruchello R., and Invidiata F.P. Tetrahedron Lett. 41 (2000) 1607
-
(2000)
Tetrahedron Lett.
, vol.41
, pp. 1607
-
-
Simoni, D.1
Rondanin, R.2
Morini, M.3
Baruchello, R.4
Invidiata, F.P.5
-
46
-
-
67349270834
-
-
note
-
From 20a, 3b was obtained in yields of only 19-20% in THF at 0 °C for 2 h with the use of 5 mol % of t-BuOK or 5 mol % of catalyst 2b.
-
-
-
-
47
-
-
67349195260
-
-
note
-
With these preliminary results to date, we cannot exclude the possibility of competitive self-catalysis by tertiary alkoxide intermediates.
-
-
-
|