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2004
Diastereoselective syntheses
O 0031
Iridium Complex Catalyzed Highly Enantio- and Diastereoselective [2 + 2 + 2]
for the Synthesis of Axially Chiral Teraryl Compounds. — The
45- 025 Cycloaddition
title reaction of diynes and alkynes with oxygen functionalities gives various axially
chiral teraryl compounds with extremely high enantio- and diastereoselectivities. As
the products are readily transformed into diol compounds by deprotection without
racemization, the present procedure provides access to a new chiral pool of diol compounds with C2 symmetry. — (SHIBATA*, T.; FUJIMOTO, T.; YOKOTA, K.;
TAKAGI, K.; J. Am. Chem. Soc. 126 (2004) 27, 8382-8383; Dep. Chem., Sch. Sci.
Eng., Waseda Univ., Shinjuku, Tokyo 169, Japan; Eng.) — S. Adam
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