a sequential process strategy was introduced for the synthesis of 2,3,4,5-tetrasubstituted pyrroles by the formation of benzoin from the corresponding aromatic aldehyde and followed by condensation reaction with 1,3-dicarbonyl compounds and ammonium acetate in the presence of diethylene glycol-bis(3-methylimidazolium) dihydroxide as catalyst in refluxing ethanol. the recycled catalyst could be ...

BACKGROUND AND OBJECTIVE The aim of this study was to test the hypothesis that tincture of benzoin (TOB) facilitates immediate transmucosal nicotine absorption while simultaneously promoting a safe and sustained delivery of the nicotine. METHODS In combination with TOB, nicotine toxicity and diffusion across human mucosal cells were measured using a 3-D human mucosal tissue model. RESULTS N...

Abstract Community dependence on logging forest resources which exceeds the carrying capacity limit. The existence of natural in form Non-Timber Forest Products can directly reduce exploitation timber products. Method data collection were interview technique and field observation. results showed that types non-timber products (HHBK) have economic potential are sugar palm ( Arenga pinnata ), pat...

The condensation of 2-carb-oxy-benzaldehyde with 1,2-phenyl-enediamine unexpectedly yielded the title compound, C(22)H(14)N(2)O(4)·CH(4)O. The benzimidazole ring system is almost perpendicular to the phthalazine ring system, making a dihedral angle of 88.4 (5)°. Inter-molecular O-H⋯N and O-H⋯O hydrogen-bonding inter-actions stabilize the crystal structure.

A sequential process strategy was introduced for the synthesis of 2,3,4,5-tetrasubstituted pyrroles by the formation of benzoin from the corresponding aromatic aldehyde and followed by condensation reaction with 1,3-dicarbonyl compounds and ammonium acetate in the presence of diethylene glycol-bis(3-methylimidazolium) dihydroxide as catalyst in refluxing ethanol. The recycled catalyst could be ...

Laryngismus Stridulus being rather au uncommon affection iu the adult, the following case, treated in Dr. J. Fffenoh Mullen's ward, at the Presidency General Hospital, mayprove interesting: ? Harry Westerman, seaman, was admitted into the General Hospital on the 15th November 1888. His condition, on admission, was as follows :?Both tonsils are large and inflamed : cannot swallow solid food ; te...

Four cases of condylomata acuminata in children (two boys, two girls) are reported. Three children had perianal warts and one vulvar warts. One of the four children had been sexually assaulted, but a history of sexual contact was absent in the other three. Surgical excision was undertaken in one case and the others responded well to the local application of 25% podophyllin in benzoin tincture c...

In the title compound, C(10)H(12)O(4)·H(2)O, the 2,4,5-trimeth-oxy-benzaldehyde mol-ecule is almost planar (rms deviation = 0.0183 Å). There is an R(1) (2)(5) ring motif due to O-H⋯O hydrogen bonding. In the crystal, the mol-ecules are stabilized in the form of one-dimensional polymeric chains extending along [010] due to O-H⋯O hydrogen bonding with adjacent water mol-ecules. The H atoms involv...