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Letters<br />
Spotlights<br />
XII Table of Contents<br />
2867 K.-L. Li<br />
C.-C. Guo*<br />
Q.-Y. Chen*<br />
2872 D. Enders*<br />
H. Saeidian<br />
Z. Mirjafary<br />
D. Iffland<br />
G. Raabe<br />
J. Runsink<br />
2875 F. Hamon<br />
B. Violeau<br />
F. Turpin<br />
M. Bellot<br />
L. Bouteiller<br />
F. Djedaini-Pilard<br />
C. Len*<br />
2880 Compiled by<br />
U. D. Patil<br />
Efficient One-Pot Regioselective Synthesis of 2,3-Dibromo-5,10,15,20-tetraarylporphyrins<br />
from 5,10,15,20-Tetraarylchlorins<br />
Ar<br />
NH N<br />
N<br />
Ar<br />
HN<br />
Ar<br />
Ar<br />
easily available,<br />
60–85% yield from H2TArP<br />
(1) NBS, CHCl3,<br />
N2, reflux, 4 h<br />
(2) DDQ, CHCl3,<br />
air, reflux, 1 h<br />
Ar<br />
NH N<br />
N<br />
Ar<br />
HN<br />
Ar<br />
95–96%<br />
Diastereo- and Enantioselective Synthesis of a,b-Disubstituted<br />
g-Bisalkoxycarbonyl Sulfonates<br />
O<br />
O<br />
R1 =<br />
S<br />
O O<br />
OR1 O<br />
O<br />
O<br />
MeO 2C<br />
CO2Me<br />
EWG 1<br />
R2 EWG2 62–79%<br />
SO 3i-Pr<br />
de, ee = >98%<br />
Me<br />
EWG 2<br />
48%<br />
R 1 = i-Pr<br />
R 2 = p-Tol<br />
R<br />
S<br />
2<br />
EWG1 O O<br />
OR1 ds = 69–96%<br />
Potential Supramolecular Cyclodextrin Dimers Using Nucleobase Pairs<br />
Bestmann–Ohira Reagent:<br />
A Versatile Reagent in Organic Synthesis<br />
Br<br />
Br<br />
Ar
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