Diterpene Imines. The Preparation of 2-Azalauren-1-ene and the Facile Autoxidation of 6-Azadihydrorimuene

1990 ◽  
Vol 43 (4) ◽  
pp. 719 ◽  
Author(s):  
AR Hayman ◽  
LR Hanton ◽  
RT Weavers
Keyword(s):  
Formic Acid ◽  
Membered Ring ◽  
Keto Acid ◽  
X Ray ◽  
Model Studies ◽  
Crystallographic Study

2-Azalauren-1-ene (2) has been synthesized from keto acid (5), but attempts to generate its C15 epimer (19) have produced only (2). Model studies of imine production by treatment of a rimuene -derived keto acid (3) with iodosylbenzene /formic acid have produced a hydroxy imine (11), a conjugated imine (13), and a keto lactam (12) which has a ten-membered ring. An X-ray crystallographic study which proves the structure of (12) is described. Data in support of the intermediacy of imine (7) (6-azadihydrorimuene) in the production of (11), (12) and (13) have been obtained.

X-Ray crystallographic study of a 1,3,2-dioxaphosphorinane dimer containing five-coordinated phosphorus in the 12-membered ring

1993 ◽  
Vol 4 (2-3) ◽  
pp. 271-278 ◽  
Author(s):  
Yande Huang ◽  
Alan E. Sopchik ◽  
Atta M. Arif ◽  
Wesley G. Bentrude
Keyword(s):  
Membered Ring ◽  
X Ray ◽  
Crystallographic Study

scholarly journals A63,65Cu and 127I Nuclear Quadrupole Resonance and X-Ray Crystallographic Study of a Low-Temperature Phase of the (2-picoline) Copper (I) Iodide Dimer

1992 ◽  
Vol 47 (1-2) ◽  
pp. 106-116
Author(s):  
Augustin Habiyakare ◽  
Edwin A. C. Lücken ◽  
Gerald Bernardinelli
Keyword(s):  
Low Temperature ◽  
Temperature Dependence ◽  
Room Temperature ◽  
Membered Ring ◽  
Temperature Phase ◽  
X Ray ◽  
Crystallographic Study ◽  
Quadrupole Resonance ◽  
Nuclear Quadrupole ◽  
Low Temperature Phase

AbstractThe temperature-dependence of the 63Cu and 127I NQR spectra of bis(2-picoline) Copper(I) Iodide reveals the existence of a phase change at 250 K. An X-ray crystallographic study of the low-temperature phase reveals that the iodine-bridged dimeric structure, which was observed at room-temperature, is retained in the low temperature phase but that the bond-lengths and, particularly, the bond-angles of the central four-membered ring are considerably modified.

X-ray Crystallographic Study of Alkylammonium Anthracene-9-carboxylates as a Model for Fibrous Structure of Binary Anthracene Salt Gels

2004 ◽  
Vol 69 (6) ◽  
pp. 1292-1300 ◽  
Author(s):  
Tahahiro Tani ◽  
Kazuki Sada ◽  
Masatsugu Ayabe ◽  
Yuya Iwashita ◽  
Takanori Kishida ◽  
...  
Keyword(s):  
Alkyl Chain ◽  
Columnar Structure ◽  
Hydrogen Bond Network ◽  
One Dimensional ◽  
X Ray ◽  
Crystallographic Study ◽  
Alkylammonium Salts ◽  
Bond Network ◽  
Fibrous Assemblies ◽  
Long Alkyl Chain

Crystal structure of hexylammonium anthracene-9-carboxylate was investigated. The salt was arranged by a one-dimensional hydrogen bond network to form a columnar structure in the crystalline state. This columnar structure should be the model of fibrous assemblies in the organogels of anthracene-9-carboxylate alkylammonium salts having a long alkyl chain.

scholarly journals X-ray Crystallographic Study of the Erabutoxins and of a Diiodo Derivative

1971 ◽  
Vol 246 (13) ◽  
pp. 4366-4368 ◽  
Author(s):  
Barbara W. Low ◽  
Reginald Potter ◽  
Richard B. Jackson ◽  
Nobuo Tamiya ◽  
Showbu Sato
Keyword(s):  
X Ray ◽  
Crystallographic Study
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