Journal of the American Chemical Society p. 3007 - 3010 (1989)
Update date:2022-09-26
Topics:
Pascal, Robert A.
Winans, Charles G.
Van Engen, Donna
The syntheses of 2,8,17-trithia-in-<35,12><9>metacyclophane, 2,7,16-trithia-in-<35,11><8>metacyclophane, and 2,6,15-trithia-in-<34,10><7>metacyclophane are described.Due to the extreme proximity of the apical methine hydrogen atoms and the centers of the aromatic rings, the compounds display very high field 1H NMR resonances and very high frequency IR C-H stretching bands.X-ray crystallographic analyses of the latter two compounds reveal hydrogen-to-ring distances of only 1.81 and 1.69 Angstroem, respectively.The experimentally determined geometries are contrasted with structures generated by molecular mechanics and semiempirical molecular orbital calculations.
View MoreBeijing Mediking Biopharm Co., Ltd.
Contact:+86-10-89753524/81760121/81769521
Address:Hongxianghong Incubator, Beiqijia Town, Changping district, Beijing, China
Contact:0550-7041128 0550-7090578
Address:Wangdian Street,Xinjie Town
Jiacheng-Chem Enterprises Limited(expird)
Contact:86-571-86711508
Address:19 Floor, CIBC Holley International Building, No. 198,Wuxing Road, Hangzhou, China,310020
Beyond Pharmaceutical Co., Ltd
Contact:+86-571-8195-3185
Address:No. 13-1, Liansheng Road, Yuhang District
Changzhou Litong Chemical Co., Ltd.
website:http://www.litonchem.com/
Contact:+86-519-86301238
Address:Laoba Rd, Hutang town Changzhou Jiangsu
Doi:10.1002/ejoc.200900216
(2009)Doi:10.1021/ja00188a092
(1989)Doi:10.1021/jm034142q
(2003)Doi:10.1039/b9nj00227h
(2009)Doi:10.1021/ja9046944
(2009)Doi:10.1016/S0020-1693(00)89278-6
(1989)
