Колеги! Помогите, пожалуйста, со статьями:
1) Rama, R., Srinivasan V. R. SYNTHESIS AND REACTIVITY OF 1,1-DIHYDRO-2-OXIMINO-3-ARYL-3H-NAPHTHO<2,1-b>PYRANS // Heterocycles, 1991, vol. 32, №1, p. 33 - 39.
2) Rao T. S., Trivedi G. K. REACTION OF POTASSIUM SUPEROXIDE WITH 3-NITRO-2-PHENYL-2H-1-BENZOPYRANS AND THEIR DIHYDRO DERIVATIVES // Heterocycles, 1987, vol. 26, №8, p. 2117 - 2124.
3) Varma R. S., Varma M., Gai Y.-Z., Kabalka G. W. STANNOUS CHLORIDE REDUCTION OF α,β-UNSATURATED NITROALKENES : A DIRECT SYNTHESIS OF 2-ARYL-2H-1-BENZOPYRAN-3(4H)-ONE OXIMES // Heterocycles, 1986, vol. 24, №9, p. 2581 - 2586.
4) Varma R. S., Kadkhodayan M., Kabalka G. W. THE SYNTHESIS OF 2-PHENYL-3-NITRO-3,4-DIHYDRO-2H-1-BENZOPYRANS // Heterocycles, 1986, vol. 24, №6, p. 1647 - 1652.
5) Varma R. S., Kabalka G. W. A convenient one-pot synthesis of 3-nitro-2H-chromenes by ultrasonic agitation on basic alumina // Heterocycles,1985, vol. 23, №1, p. 139 - 141.
6) Rao T. S., Deshpande S., Mathur H. H., Irivedi G. K. A NOVEL SYNTHESIS OF 6-METHOXY AND 7-METHOXY FLAVONOLS // Heterocycles, 1984, vol. 22, №9, p. 1943 - 1946.
Заранее благодарю!
