A conjugated dienic benzyl ether was shown to undergo Wittig sigmatropic rearrangementto give a mixture of[1,2]and[1,4]besides the expected[2,3]rearrangement p
Tungsten oxycarbide with specific surface area 24 m~2/g was prepared from whitetungstic acid by reduction and carburization with CO and H_2.XRD and EXAFS meas