Abstract: Miticidal 1-(2-alkyl-4-(or 5)-bromo (or (chloro)-2,3-dihydrobenzofuran-7-yl)-4-alkoxy-4-alkylsemicarbazides.

Abstract: Novel diazonium salts which possess excellent photo speed, good thermal stability, exceptional resistance to discoloration in the D.sub.min areas, rapid development, and allow a wide range of azo dye colors are provided. The diazonium salts are of the following formula: ##STR1## wherein R.sub.1 is tertiary butyl or tertiary amyl; Y is hydrogen, alkyl, hydroxyalkyl, cyanoalkyl, cycloalkyl, aralkyl, alkoxy, aryloxy, aralkoxy, aralkylthio, arylthio, alkylthio, halogen, allyl, allyloxy, allylthio, cyanoalkoxy, hydroxyalkoxy, methoxyalkoxy, trifluoroalkyl, alkylacetylamino, morpholino, or dialkyl carbonamido;R.sub.2 and R.sub.3 are the same or different, and are alkyl, aralkyl, allyl, cyanoalkyl, hydroxyalkyl, hydrogen, acyl, cycloalkyl, beta-chloroalkyl, branched alkyl, or a structure wherein R.sub.2 and R.sub.3 may be linked together to form a heterocyclic structure; andX is an anion.

Abstract: Miticidal 2-(2-alkyl-4-(or 5)-bromo (or chloro)-2,3-dihydrobenzofuran-7-yl)-N-alkoxy-N-alkyldiazenecarboxamides.

Abstract: Light sensitive condensed copolymers or multi-polymers of at least two distinct diazonium salts of the types specified herein. The product is characterized by high light speed, good shelf life and very good resistance to thermal and electrical degradation.

Abstract: A novel synthon useful in the conversion of penicillin is a compound of the formula ##STR1## wherein R.sub.3 is a number of the group consisting of trimethyl-silyl, t-butyl dimethyl silyl, trimethyl silyl, methyl, benzyl or nitrobenzyl, and R.sub.5 is the same or different member of the group R.sub.3 is prepared by the naphthalene sulfonyl azide exchange reaction with benzyl acetoacetate, p-nitrobenzylacetoacetate, or methylacetoacetate to obtain the corresponding 2-diazo compound which is then silylated in hexamethyl-disalazine.

Abstract: The invention relates to a process for the preparation of aryldiazosulfonates by reacting aqueous solutions of aryldiazonium salts with solutions or suspensions of sulfites, in particular in a manner such that the presence of an excess of one of the two reactants during the reaction is substantially excluded. The process according to the invention makes it possible substantially to increase the yields of aryldiazosulfonates.

Abstract: Trisazo compounds having the following general formula I: ##STR1## are useful as charge carrier generating materials for electrophotographic elements. Multilayer electrophotographic elements having a charge carrier generating layer containing these compounds as charge carrier generators and having a separate charge transport layer containing a charge transport material are particularly excellent in sensitivity in the 780-800 nm wavelength region.