ChemInform Abstract: STEROIDAL ALLYLIC OXIDATION WITH CHROMIUM TRIOXIDE IN THE PRESENCE OF PYRAZOLE

1985 ◽  
Vol 16 (38) ◽  
Author(s):  
E. J. PARISH ◽  
S. CHITRAKORN ◽  
K. L. III TODD
Keyword(s):  
Chromium Trioxide ◽  
Allylic Oxidation

Allylic oxidation with 3,5-dimethylpyrazole. Chromium trioxide complex steroidal .DELTA.5-7-ketones

1978 ◽  
Vol 43 (10) ◽  
pp. 2057-2059 ◽  
Author(s):  
William G. Salmond ◽  
Mary A. Barta ◽  
Jeffrey L. Havens
Keyword(s):  
Chromium Trioxide ◽  
Allylic Oxidation

Correction. Allylic Oxidation of Olefins with Chromium Trioxide-Pyridine Complex

1971 ◽  
Vol 36 (23) ◽  
pp. 3657-3657
Author(s):  
William Dauben ◽  
Milton Lorber ◽  
Dwight Fullerton
Keyword(s):  
Chromium Trioxide ◽  
Allylic Oxidation ◽  
Pyridine Complex ◽  
Oxidation Of Olefins

Constituents of Solidago Species. Part V. Non-acidic Diterpenoids from Solidago gigantea var. serotina

1973 ◽  
Vol 51 (9) ◽  
pp. 1346-1358 ◽  
Author(s):  
M. S. Henderson ◽  
R. McCrindle ◽  
D. McMaster
Keyword(s):  
Total Synthesis ◽  
Related Compound ◽  
Chromium Trioxide ◽  
Allylic Oxidation ◽  
Spectroscopic Evidence ◽  
Solidago Gigantea ◽  
Pyridine Complex ◽  
Related Compounds ◽  
Leonotis Leonurus

Eight new furan-containing diterpenoids from Solidago gigantea Ait. var. serotina (Kuntze) Cronqu., are formulated as 1c–g, 2, 3a, and 4a on the basis of chemical and spectroscopic evidence and by correlation with solidagoic acid A of previously defined constitution and stereochemistry. The structure (5a) of a ninth related compound is tentatively assigned. The allylic oxidation of some of these new diterpenoids and related compounds with the chromium trioxide – pyridine complex is reported. In the course of this investigation of formal total synthesis of compound Y from Leonotis leonurus was achieved.

Allylic oxidation of olefins with chromium trioxide pyridine complex

1969 ◽  
Vol 34 (11) ◽  
pp. 3587-3592 ◽  
Author(s):  
William G. Dauben ◽  
Milton E. Lorber ◽  
Dwight S. Fullerton
Keyword(s):  
Chromium Trioxide ◽  
Allylic Oxidation ◽  
Pyridine Complex ◽  
Oxidation Of Olefins

STEROIDAL ALLYLIC OXIDATION WITH CHROMIUM TRIOXIDE IN THE PRESENCE OF PYRAZOLE

1985 ◽  
Vol 17 (3) ◽  
pp. 192-194 ◽  
Author(s):  
Edward J. Parish ◽  
Sarawanee Chitrakorn ◽  
Kenneth L. Todd
Keyword(s):  
Chromium Trioxide ◽  
Allylic Oxidation

scholarly journals Synthesis of Myrtenal through Allylic Oxidation of α-Pinene over a Pd/SeO2/SiO2 Catalyst

2020 ◽  
Vol 3 (1) ◽  
pp. 43
Author(s):  
Florencia Antonella Musso ◽  
Victoria Soledad Gutiérrez ◽  
María Alicia Volpe ◽  
María Belén Faraoni
Keyword(s):  
Allylic Oxidation

SeO2 based samples are tested for the oxidation of α-pinene, in liquid phase employing ethanol as the solvent. Commercial SeO2 was tested under both reflux and under 6 atm O2 pressure. At conversion levels of approximately 40%, the yield to myrtenal was much higher in the latter (34.4%) than in the former case (18.0%) due to the high oxidant species availability. Besides the high yield attained at relatively short reaction time. A palladium promoted selenium dioxide supported catalyst (Pd/SeO2/SiO2) was prepared, characterized, and submitted to the catalytic test. Selenium dioxide (14.4%) was strongly fixed to the silica support. Upon the palladium introduction (0.98%), the reducibility of SeO2 is modified, which originates a selenium species activation towards the allylic oxidation. A 12% conversion level is attained over Pd/SeO2/SiO2 following 8 h of reaction time, employing ethanol as the solvent at 134 °C. The main product is myrtenal, being obtained with a selectivity of 62%. Over oxidation products are not detected. The palladium/selenium dioxide sample is easy to handle with and its recuperation following the reaction in liquid phase is possible.

Mechanistic insights into the allylic oxidation of aliphatic compounds by tetraamido iron(v) species: A C–H vs. O–H bond activation

2020 ◽  
Vol 44 (44) ◽  
pp. 19103-19112
Author(s):  
Monika ◽  
Azaj Ansari
Keyword(s):  
Comparative Study ◽  
Bond Activation ◽  
Iron Complex ◽  
Catalytic Reactions ◽  
Allylic Oxidation ◽  
Deep Insight ◽  
Aliphatic Compounds ◽  
High Valent ◽  
Insight Into

This work is based on a deep insight into a comparative study of C–H vs. O–H bond activation of allylic compound by the high valent iron complex. Our theoretical findings can help to design catalysts with better efficiency for catalytic reactions.

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