Reaction products of stannyl derivatives of naphthalene diimides with rylenes
A composition and compound technology, applied in applications, inks, electrical components, etc., can solve the problems of difficult to separate dibrominated mixtures, impractical, and difficult to obtain metallizing reagents, and achieve the effect of improving solid filling
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[0159] Additional specific embodiments are provided below without limitation.
[0160] PART I.
Embodiment A-1
[0161] Embodiment A-1 prepares compound 3,4
[0162] Scheme 1. Preparation of stannyl NDI derivatives.
[0163]
[0164] N,N'-bis(n-hexyl)-2-tris-(n-butyl)stannylnaphthalene-1,4,5,8-bis(dicarboximide), 3, and N,N' -bis(n-hexyl)-2,6-bis(tri(n-butyl)stannyl)naphthalene-1,4,5,8-bis(dicarboximide), 4, according to scheme 1 with moderate The yield is obtained. A mixture of suitable mono- or dibrominated derivatives, 1 or 2, and hexabutylditin (1 equivalent per brominated substituent) in toluene on Pd 2 dba 3 (0.05 equiv per bromide) and P(o-tol) 3 (0.2 equivalent per bromide) was heated. The reaction products were purified by silica gel chromatography and recrystallization from methanol to provide mono- and stannyl derivatives as long yellow needles; these compounds were analyzed by NMR spectroscopy, mass spectroscopy, elemental analysis and, in In the case of compound 4, the crystal X-ray structure was characterized.
[0165] Under the same conditions, in comparison, mon...
Embodiment A-2
[0167] Embodiment A-2 replaces preparation method; The synthesis of 5 and 6
[0168] Scheme 2. Preparation of stannyl NDI derivatives from commercially available NDA.
[0169]
[0170] Compounds 3 and 4 have different chromatographic properties (3: Rf = 0.3 on silica, eluting with 1:1 dichloromethane / hexane; 4: Rf = 0.3 on silica, using 1:10 dichloromethane / hexane elution), it is recommended to use a mixture of mono- and dibromo species for this reaction, which comes from the bromination and imylation of NDA and is only purified in the final stage. It is even possible to carry out these transformations without isolation of the mono- and di-functionalized intermediates, to obtain isolated yields of the mono- and stannyl derivatives of approximately 20% and 5%, respectively (e.g., when using 1eq.DBI said brominating agent).
[0171] The relative yields can be adjusted according to the brominating agent, about 10% yields were obtained for using 2.1 eq. of DBI mono- and di-s...
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