Is 2,3,4,5-tetramethoxybenzoyl chloride a natural product?
The title compound, which was reported to be a constituent of the fruiting body of the fungus Antrodia camphorata, has been synthesized. The reactivity and spectroscopic properties of the synthetic material do not match those of the natural product. There is currently insufficient information for a definitive structural reassignment.
2,2',4,4',6-PENTA-TERT-BUTYLBENZIL : AN UNEXPECTED PRODUCT IN THE ATTEMPTED COUPLING OF TRI-TERT-BUTYLBENZOYL CHLORIDE WITH MAGNESIUM-MAGNESIUM IODIDE
Reduction of 2,4,6-tri-tert-butylbenzoyl chloride 
with Mg–MgI2 in 1∶1 diethyl 
ether–benzene under ultrasonic irradiation gives the 
hexa-tert-butyl-benzil and -benzoin and also 
2,2′,4,4′,6-penta-tert-butylbenzil. 
Possible mechanisms for the loss of the But 
group are discussed.
Polyacetylenverbindungen, 210. Weitere Inhaltsstoffe der Tribus Inuleae
Die Untersuchung zahlreicher Vertreter der Tribus Inuleae zeigt, das das Pentain-en 1 hier sehr verbreitet ist. Osmites hirsuta enthalt dagegen C10-Acetylene (2 und 3), wahrend aus Stoebe plumosa zwei neue p-Hydroxy-acetophenon-Derivate (4 und 5) isoliert werden. 
 
 
 
Polyacetylenic Compounds, 210. Further Constituents of the Tribe Inuleae 
 
 
 
The investigation of numerous members of the tribe Inuleae shows that the pentaynene 1 here is very widespread. Osmites hirsuta however contains C10-acetylenes (2 and 3), while from Stoebe plumosa two new p-hydroxyacetophenone derivatives (4 and 5) have been isolated.