
TY  - JOUR
A1  - Caddy, B 
A1  - Martin-Smith, M 
A1  - Norris, RK 
A1  - Reid, ST 
A1  - Sternhell, S 
T1  - Proton magnetic resonance spectra of some benzo[b]thiophens. An investigation of substituent effects in a heteroaromatic system
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1968
VL  - 21
IS  - 7
SP  - 1853
EP  - 1866
KW  - 
UR  - https://doi.org/10.1071/CH9681853 
N2  - N.m.r. data for 19 5-substituted and 13 polysubstituted benzo[b]thiophens are tabulated. The influence of the substituents at C5 on the chemical shifts of H4 and H6 is discussed. Long-range interproton spin-spin coupling between H3 and H7, and between H2 and H6, is general in benzo[b]thiophens. The vicinal coupling J6,7 in 5-substituted benzo[b]thiophens varies directly and linearly with the electronegativity of the substituents at C5. 
ER  -

