91826-90-3Relevant academic research and scientific papers
Oxidation of 4,6,8-Trimethylazulene and Guaiazulene with Hydrogen Peroxide in Pyridine
Matsubara, Yoshiharu,Morita, Masanori,Takekuma, Shin-ichi,Nakano, Tomohiro,Yamamoto, Hiroshi,Nozoe, Tetsuo
, p. 3497 - 3499 (2007/10/02)
Oxidation of 4,6,8-trimethylazulene (1) with hydrogen peroxide in pyridine at 25 deg C for 18 h gave 4,6,8-trimethyl-1,5- and -1,7-azulenequinones, their 2-(4,6,8-trimethyl-1-azulenyl) derivatives, and 2,3-dihydro-4,6- and -4,7-dimethyl-2-(4,6,8-trimethyl-1-azulenyl)-1H-inden-1-ones in much higher yields than those by autoxidation of 1 in DMF at 120 deg C.The same oxidation of guaiazulene afforded sixteen separable products, among which there were three new dimeric condensates.
OXIDATION OF AZULENE DERIVATIVES. AUTOXIDATION OF GUAIAZULENE IN A POLAR APROTIC SOLVENT
Nozoe, Tetsuo,Takekuma, Shin-ichi,Doi, Masashi,Matsubara, Yoshiharu,Yamamoto, Hiroshi
, p. 627 - 630 (2007/10/02)
Autoxidation of guaiazulene at 100 deg C in N,N-dimethylformamide afforded twenty-three separable products including seven known compounds.Most of these new compounds possess highly interesting structures of azulenoquinone, inden-1-one, benzocyclobutadien
