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Esters and ethers of the 1,4-di-N-oxide of 2,3-bis(hydroxymethyl)quinoyaline have been obtained under conditions of interfacial catalysis in a chloroform-water system. The catalytic activities of tetrabutylammonium bromide and cetyltriethylammonium bromide have been compared in the synthesis of the acetate, benzoate, and 4-nitrobenzoate of the 1,4-di-N-oxide of 2,3-bis(hydroxymethyl)quinoxaline.

As is known motion picture film materials are subject in projection to substantial mechanical and thermal effects. When new types of screen presentation appeared these factors acquired especial significance. Thus, when changing from 35mm film to 70mm film with 5 perforations per frame the perforation load during projection becomes 2.5 times that of 35mm and when changing to a 70mm film with 40 perforations per frame the perforation load during projection becomes 5 times as much. It is not by chance therefore that the normal number off performances for the 70mm motion picture prints of about 300 is considerably lower than that for the 35mm prints (480). The mechanical impact effects of the intermittent sprocket upon perforations, though of a local character and Influencing only the edge of the sprocket holes, are nevertheless very often the cause of premature failure of the whole film (1, 2). This is no wonder since the film in the projector is under tension, resulting in fast development and spreading of edge micro-defects arising from this impact effect. After projection the film is wound up under tension (300–500g. for 35mm film and 600–700g. for 70mm film) and is kept in this state till the next presentation. [ABSTRACT FROM AUTHOR]