Synthesis and Crystal Structure of a New Hydrated Benzimidazolium Salt Containing Spiro Structure

Abstract

Abstract:A new hydrated benzimidazolium salt containing spiro structure was obtained when benzimidazole is added to ethyl alcohol of 1,5-dioxaspiro[5.5]undecane-2,4-dione and trimethoxymethane. The title compound (C 19 H 21 O 8 ) (C 7 H 7 N 2 ) (0.5H 2 O) was characterized by elemental analysis, IR, UV-Vis, and single-crystal X-ray diffraction. The result shows that it belongs to the triclinic system, space group P-1, with a = 11.017 (2)

Synthesis, Characterization, and Fluorescence Properties of Two New Heterocyclic Compounds Containing 1,5-Dioxaspiro Group

“…In A1, the sharp peaks at 1703, 1686, 1246, 1212 cm −1 are due to the C=O and C-O vibrations of (C19 H21 O8) − anion, as shown in Figure 4. In B1, the sharp peaks at 1717, 1678, 1250, 1200 cm −1 are due to the C=O and C-O vibrations of C19 H19 N O4, which resembles to our earlier report [16,17]. A similar peak at 1631 cm −1 and 1625 cm −1 is present, respectively, which indicting C=C stretching vibration of C(8)=C(10)-C(11) in (A1) and C(8)=C(10)-N(1) (B1).…”

“…Alkynylgold(III) complexes [11], pyrene-pyrazoline [12], piro-annulated benzimidazole host [13] have been used as organic light-emitting devices. Based on these reasons, different heterocyclic compounds were designed and synthesized by our group for ten years [14][15][16][17]. Considering that chemical property of compounds containing 1,5-dioxaspiro group will be different with other heterocyclic compounds, two new spiroheterocyclic compounds: C 21 H 29 NO 8 (A1) and C 19 H 19 NO 4 (B1) are designed and synthesized (Scheme 1).…”

Crystal Structure, Thermodynamic Properties and DFT Studies of 5,6-dimethyl-1H-benzo[d]imidazol-3-ium 3-((2,4-dioxo-1,5-dioxaspiro[5.5]undecan-3-ylidene)methyl) -2,4-dioxo-1,5-dioxaspiro[5.5]undecane Hydrate

“…(10) atom is used to join two 1,5-dioxaspiro [5.5] undecane-2,4-dione moieties. The bond lengths reported for C8-C10 and C10-C11 are 1.389(2) Å and 1.382(2) Å, respectively, which resemble related published compounds (1.386(2) Å, 1.380(2) Å) [24]. Their corresponding calculated results are 1.395 Å and 1.388 Å.…”

“…All kinds of spirocyclic compounds were designed and synthesized [19][20][21]. Based on the above reasons, our group has prepared several spirocyclic compounds derived from the 1,5-dioxaspiro group or the 6,10-dioxaspiro group in ten years [22][23][24][25]. However, to the best of our knowledge, among so many reported oxaspirocyclic compounds, neither theory studies nor comparison between the experimental and calculational results for derivatives from a benzodimidazole moiety are available.…”

Modern Approaches to the Synthesis and Transformations of Practically Valuable Benzothiazole Derivatives

“…Compounds 80 are promising electrophiles for synthesizing organoelement derivatives by the reaction with C-nucleophiles. The increased interest in the salts of heterocyclic compounds is due to wide application in different fields [114][115][116][117][118][119]. The three-component reaction of 2-mercaptobenzothiazole, silane (a, see Scheme 61) and molecular iodine, in addition to product 79a, leads to the annulated N,S,Si-heterocycle 81 [120].…”