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Obituary
Yoshito Kishi (1937-2023)
Yoshito Kishi (1937-2023)
Professor. Yoshito Kishi,
a member of the Honorary Editorial Associates of HETEROCYCLES,
has passed away on January 9, 2023 at the age of 85.
I deeply express my regret over his death.
Kunio Ogasawara
Editor
January 13, 2023
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Paper | Regular issue | Vol 24, No. 8, 1986, pp.2233-2237
Published online, 1st January, 1970■ A Selective Synthesis of Unsymmetrical 1,1’-Methylenebisdiazoles by Solid-liquid Phase Transfer Catalysis
Published online, 1st January, 1970
DOI: 10.3987/R-1986-08-2233
■ A Selective Synthesis of Unsymmetrical 1,1’-Methylenebisdiazoles by Solid-liquid Phase Transfer Catalysis
Sebastian Juliá, Carlos Martínez-Martorell, and José Elguero*
*Instituto de Química Médica, C. S. I. C., Calle Juan de Cierva, 3, 28006 Madrid, Spain
Abstract
1,1’-Methylenebisdiazoles Az1-CH2-Az2, Az1 and Az2 being two different diazoles, can be prepared selectively in three steps, through 1-hydroxymethyl- and 1-chloromethyldiazoles, by solid-liquid (S-L) phase transfer catalysis.
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