5693-54-9Relevant articles and documents
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Borisova et al.
, (1979)
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Total Synthesis of Cryptopleurine and Its Analogues
Takasu, Kiyosei,Tateishi, Kaito,Yamakawa, Takuro,Yamaoka, Yousuke
, (2022/03/08)
Total synthesis of phenanthroquinolizidine alkaloid cryptopleurine was achieved in 8 steps from commercially available 2-pyridinecarboxaldehyde and the epoxide derived from methyleugenol. The key intermediate vinyl triflate enables the divergent synthesis of cryptopleurine derivatives by late-stage installation of various substituents on the C-ring.
Supramolecular Metallacycles and Their Binding of Fullerenes
Ehnbom, Andreas,G?b, Christian R.,Oppel, Iris M.,Sturm, Lisa,Tobe, Yoshito
supporting information, (2020/03/19)
The synthesis of a new triaminoguanidinium-based ligand with three tris-chelating [NNO]-binding pockets and C3 symmetry is described. The reaction of tris-(2-pyridinylene-N-oxide)triaminoguanidinium salts with zinc(II) formate leads to the formation of cyclic supramolecular coordination compounds which in solution bind fullerenes in their spherical cavities. The rapid encapsulation of C60 can be observed by NMR spectroscopy and single-crystal X-ray diffraction and is verified using computation.
Intermolecular reactions of chlorohydrine anions: Acetalization of carbonyl compounds under basic conditions
Barbasiewicz, Michal,Makosza, Mieczyslaw
, p. 3745 - 3748 (2007/10/03)
Nonenolizable aldehydes and ketones react with 2-chloroethanol and 3-chloropropanol under basic conditions (t-BuOK, DMF/THF) with formation of 2-substituted 1,3-dioxolanes and 1,3-dioxanes, respectively. Conversion of the two-step addition-alkylation process depends on the electrophilicity of the carbonyl group that governs the equilibrium of addition of chloroalkoxides. This method of protection of carbonyl groups in the form of cyclic acetals under kinetically controlled conditions is complementary to the acid-catalyzed reaction with diols.
