Deoxygenations of diphenylfuroxane, azoxybenzene, isocyanates, ethyl isothiocyanate, and diphenylketene have been studied. When diphenylfuroxane or azoxybenzene was treated with triethyl phosphite, diphenylfurazan or azobenzene was obtained in excellent yield along with triethyl phosphate. Further, when isocyanates and ethyl isothiocyanate were treated with tertiary phosphites, the corresponding isonitriles were obtained in fairly good yields. On the other hand, an addition compound was obtained from the reaction of diphenylketene and triethyl phosphite. The pyrolysis of the adduct led to the formation of diphenylacetylene, the deoxygenated product, and triethyl phosphate along with the dimer of diphenylketene.

No abstract

A rare complication of acute or chronic pancreatitis is the formation of a mediastinal pancreatic pseudocyst (MPP), which is caused by tracking of pancreatic fluids through anatomical openings of the diaphragm into the mediastinum. Herein, we report the imaging characteristics of three cases of this condition. Our results revealed three features in common: (i) the connection between the mediastinum and the pancreatic cystic lesion; (ii) the presence of pleural effusions; and (iii) imaging findings consistent with chronic pancreatitis, such as pancreatic atrophy and calcifications and dilatation and/or stricture of main pancreatic duct (MPD). Serial diameter changes of the MPD and of the adjacent pseudocysts were necessary for the determination of the therapeutic strategy used in each case.

Key Clinical MassageHere, we report a case with successful treatment of inferior pancreaticoduodenal artery aneurysm rupture due to celiac artery trunk compression caused by the median arcuate ligament. When clinicians see visceral aneurysms, the possibility of arcuate midline ligament compression syndrome (MALS) and ligamentectomy for MALS should be considered.

No abstract