Modified Cyclodextrins—Novel, Highly Enantioselective Stationary Phases for Gas Chromatography

✍ Scribed by Prof. Dr. Wilfried A. König; Dipl.-Chem. Sabine Lutz; Dr. Gerhard Wenz

• Publisher: John Wiley and Sons
• Year: 1988
• Tongue: English
• Weight: 239 KB
• Volume: 27
• Category: Article
• ISSN: 0044-8249
• DOI: 10.1002/anie.198809791

✦ Synopsis

4] Ahbrei izlion for ~'-cyclopentadienyl-(3,4,5,8,9-~'-tricycl0-[5.2.1.0~~]deca-3.X-dien-5-yi)iron. DicpFeCp is used here as an acronym.

[S] El-MS (70 eV): m/z (rel. int.) 252 (M", 43), 186 ([M-C,H,,]', loo), 121 (CpFe .65), 56 (Fe', 38).-'H-NMR (ChDhr 270 MHz, 30°C): 6= 1.36 (dt. 'J=8.8 Hz, 'J= 1.2 Hz, cyn-HIO), 1.96 (rn, H2/6), 1.98 (dt, partially ocerlapped, ' J = 1.2 Hz, anti-HIO), 2.72 (m, H1/7), 3.69 (s, C s H 5 ) , 4.42 (m, incl. 'J=3.4 Hz, H4), 5.06 (m, incl. 'J(H3/5-H4)=3.4 Hz, H3/5), 5.52 (m, H8/9); assignment by selective hornodecoupling.-"C-NMR ( ' J ( C H ) = 127.9 Hz, C2/6), 56 59 ('J(CH)= 127.8 and 133.3 Hz, CIO), 67.95 ( ' J ( C H ) = 163.1 Hz, 'J(CH)=9.5 and 5.1 Hz, C3/5), 73.23 ( ' J ( C H ) = 16.5 1 Hz, C8/9), 79.92 ('J(CH)= 174.6 Hz, 'J(CH)= 'J(CH)=6.6 Hz, C,H,), 84.63 ('J(CH)= 167.5 Hz, C4); assignment b! selective "C{ 'HJ experiments. 161 In 2 , the 'J(Cn-Hn) values for n = 1 ... 10 are: 146.7,