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Complete Identification of CC Connectivities by Two‐Dimensional INADEQUATE NMR Spectroscopy with Composite Pulses
Author(s) -
Lambert Jörg,
Kuhn Hans Jochen,
Buddrus Joachim
Publication year - 1989
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198907381
Subject(s) - composite number , spectroscopy , nuclear magnetic resonance spectroscopy , signal (programming language) , materials science , product (mathematics) , simple (philosophy) , nuclear magnetic resonance , resonance (particle physics) , analytical chemistry (journal) , chemistry , computer science , physics , atomic physics , mathematics , composite material , organic chemistry , philosophy , geometry , programming language , epistemology , quantum mechanics
Off‐resonance effects in 2 D INADEQUATE NMR spectroscopy are suppressed by the use of composite pulses instead of simple pulses. At the same time, the signal intensity can increase up to threefold. This method makes it possible to determine the connectivity of carbon frameworks in cases where normal INADEQUATE pulses fail. Its application is exemplified by the structural elucidation of the product obtained from reaction of 1 with peracids.