
TY  - JOUR
A1  - Ahluwalia, VK 
A1  - Prakash, C 
A1  - Singh, RP 
T1  - A Convenient Synthesis of Psoralen Derivatives Oxygenated in the Pyrone Ring: 4-Methoxypsoralen and 3,4-Dimethoxypsoralen (Halkendin)
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1979
VL  - 32
IS  - 6
SP  - 1361
EP  - 1367
KW  - 
UR  - https://doi.org/10.1071/CH9791361 
N2  - A convenient synthesis of psoralen derivatives oxygenated in the pyrone ring, viz. 5-methoxy-7H-furo[3,2-g][l]benzopyran-7-one (4-methoxypsoralen) and 5,6-dimethoxy-7H-furo[3,2-g][l]benzopyran-7-one (3,4-dimethoxypsoralen or halkendin), has been achieved by blocking the 8-position of the coumarin ring with an iodo group, Claisen migration, and subsequent cyclization. 
ER  -

