@article{4faea9603f084da08b53e9f26fed67fd,
title = "Enantio-face control by molecular sieves in the asymmetric Diels-Alder reaction",
abstract = "The presence of molecular sieves 4{\AA} (MS 4{\AA}) significantly influenced enantioselectivity in the Diels-Alder reaction of 2-methoxy-5-methyl-1,4-benzoquinone with 1-acetoxy-1,3-butadiene promoted by chiral TADDOL-Ti complexes. In the absence of MS 4{\AA} the (R)-adduct was formed in 72% ee, and in the presence of MS 4{\AA} the (S)-enantiomer in up to 53% ee. Capture of HCl by MS 4{\AA} has been demonstrated to play a critical role. (C) 2000 Elsevier Science Ltd.",
author = "Moharram, {S. M.} and G. Hirai and K. Koyama and H. Oguri and M. Hirama",
note = "Funding Information: We are grateful to Professor Nobuyuki Harada and Dr. Chizuko Kabuto for their assistance in X-ray analysis. A postdoctoral fellowship from the Japanese Society for the Promotion of Science (S.M.M.) is gratefully acknowledged. This study was supported financially in part by Suntory Institute for Bioorganic Research. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.",
year = "2000",
month = aug,
day = "19",
doi = "10.1016/S0040-4039(00)01116-3",
language = "English",
volume = "41",
pages = "6669--6673",
journal = "Tetrahedron Letters",
issn = "0040-4039",
publisher = "Elsevier Limited",
number = "34",
}