The assignment of absolute configurations by NMR of arylmethoxyacetate derivatives:: is this methodology being correctly used?

被引:74
作者
Seco, JM [1 ]
Quiñoá, E [1 ]
Riguera, R [1 ]
机构
[1] Univ Santiago de Compostela, Fac Quim, Dept Quim Organ, Santiago De Compostela 15706, Spain
关键词
D O I
10.1016/S0957-4166(00)00228-7
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Examples in which Mosher's method does not allow a safe configurational assignment of absolute configuration are presented. This situation occurs when: (a) L-1 and L-2 show identical signs of Delta delta(SR); (b) when both positive and negative Delta delta(SR) values coexist for the same substituent; (c) only NMR data from one substituent of L-1 or L-2 is available; and (d) when polyalcohols are treated like monoalcohols. The requirements for the correct application of this method are discussed. (C) 2000 Elsevier Science Ltd. All rights reserved.
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页码:2781 / 2791
页数:11
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