-
8
-
-
84918152907
-
-
H.G. Hanley and J.D. Slack, Ref. 4, Ch. 8
-
-
-
-
9
-
-
84918152906
-
-
P.W. Reed and G. M. Bokoch, Ref. 4, Ch. 9
-
-
-
-
10
-
-
84918152905
-
-
M.W. Osborne, J. Wenger, M. Zanko, F. Kovzelove and M.R. Cohen, Ref. 4, Ch. 10.
-
-
-
-
30
-
-
0000178470
-
Synthesis of Reduced Furans and 3(2H)-Dihydrofuranones with Manipulable Functionality
-
(1980)
HETEROCYCLES
, vol.14
, pp. 1825
-
-
Semple1
Joullié2
-
37
-
-
0001384079
-
Oxidation of olefins by potassium permanganate. Oxygen-labeling experiments and mechanism of the oxidation of 1,5-hexadiene. Evidence for a manganese intermediate with coordination number greater than four
-
(1981)
Journal of the American Chemical Society
, vol.193
, pp. 940
-
-
Wolfe1
Ingold2
-
46
-
-
84986943610
-
The Oxidation of Alcohols Using 2,2′-Bipyridinium Chlorochromate
-
(1980)
Synthesis
, vol.9
, pp. 691
-
-
Guziec1
Luzzio2
-
55
-
-
84918152904
-
-
The authors do not state whether racemic or optically pure compounds were employed.
-
-
-
-
59
-
-
84918152903
-
-
Preparation of 52: The ratio of 52 and its isomer by this method was at least 10:1 (97% yield). Optical resolution of 52 was achieved by preparative HLC separation of the l-a- methylbenzylurethane derivative.
-
-
-
-
65
-
-
84918152902
-
-
In addition, the authors have examined other examples in Ref. 39.
-
-
-
-
71
-
-
84918152901
-
-
The reactions were performed by adding lithium t-octyl-t-butylamide (LOBA) to the ketone and a 10-fold excess of TMSC1 in 23% HMPA/THF at -78°C. The occurrence of some equilibration prior to trapping is possible, however. The preferred mode of addition (ketone added to LOBA and TMSC1) was not feasible since LOBA reacts with TMSC1 at -78°C in the presence of HMPA.
-
-
-
-
72
-
-
84918152900
-
-
Addition of the trapping agent after addition of the base to the ketone.
-
-
-
-
84
-
-
77954924485
-
Synthesis of Substituted Tetrahydrofurans and Tetrahydropyrans 1. Oxidative Cyclization of p-Methoxystyrene Derivatives with DDQ
-
(1985)
HETEROCYCLES
, vol.23
, pp. 553
-
-
Oikawa1
Horita2
Yonemitsu3
-
90
-
-
0343324714
-
Studies toward polyether antibiotics: stereospecific synthesis of polysubstituted tetrahydropyrans
-
(1982)
Canadian Journal of Chemistry
, vol.60
, pp. 90
-
-
Ho1
-
92
-
-
0000455168
-
Chelation-controlled nucleophilic additions. 1. A highly effective system for asymmetric induction in the reaction of organometallics with α-alkoxyketones.
-
(1980)
Tetrahedron Letters
, vol.21
, pp. 1031
-
-
Still1
McDonald2
-
94
-
-
0003905731
-
-
For a review of the aldol reaction, see, J.D. Morrison, Academic Press, Orlando, Florida, Ch. 2.
-
(1984)
Asymmetric Synthesis
, vol.3
-
-
Heathcock1
-
96
-
-
84918152899
-
-
For synthesis of 154 see Scheme 28 and Ref. 9a
-
-
-
-
97
-
-
84918152898
-
-
153 was prepared by the method of Ref. 9o.
-
-
-
-
101
-
-
84918152897
-
-
For synthesis of 168 see Scheme 27, Section 3.2, and synthesis of 169, see Ref. 10a.
-
-
-
-
103
-
-
84918152896
-
-
That is, in conformer A, 2 oxygens have an electron pair antiperiplanar to the C-O bond, while there is only one such oxygen in conformer B and none in conformer C. Therefore, A has two anomeric effects, B has one, and C has none.68
-
-
-
-
131
-
-
0001642353
-
A Simple Route to Spiroketals via Alkylation of Dihydropyran
-
(1984)
HETEROCYCLES
, vol.22
, pp. 1489
-
-
Amoureux1
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