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- W251741880 abstract "Abstract : 3-Chloro-2,2',4,4',6,6'-hexanitrobiphenyl, PIPICL, was prepared by a three-step procedure from picryl chloride and m-chloro- or m-bromoanisole. The first step involved the formation of m-picrylanisole by means of a mixed Ullmann reaction. Using 90% nitric acid and 30% oleum, the picrylanisole was nitrated to 3-methoxy-2,2',4,4',6,6'-hexanitrobiphenyl which was in turn converted to PIPICL by treatment with pyridine and phosphorus oxychloride. When m- bromoanisole was used in the Ullmann reaction, the overall yield for the three steps was about 59%. The use of m-chloroanisole resulted in a lower yield in the first step and an overall yield of about 52%. Several variations in procedure are given for the preparation of m-picrylanisole." @default.
- W251741880 created "2016-06-24" @default.
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- W251741880 date "1966-01-18" @default.
- W251741880 modified "2023-09-27" @default.
- W251741880 title "A NEW SYNTHESIS FOR 3-CHLORO-2,2',4,4',6,6'-HEXANITROBIPHENYL, PIPICL" @default.
- W251741880 doi "https://doi.org/10.21236/ad0370133" @default.
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