Henning Amt scite author profile

This paper is dedicated to Professor Ross Stewart on the occasion of his 65th birthday HENNING AMT, WOLFGANG KLIEGEL, STEVEN J. RETTIG, and JAMES TROTTER. Can. J. Chem. 68, 1791 (1990). Reaction of N,N1-1 ,2-ethanediylidenebis(2,2-diethoxyethanamine)-N,N'-dioxide and phenylboronic acid yields the title compound. Crystals of 1,4-bis(2,2-diethoxyethyl) -6 3 -diphenyl-5,:, 9-trioxa-4-aza-1 -azonia-8-bora-6-boratabicyclo

Structural studies of organoboron compounds. XXX. 1,9-Dimethyl-3,5,7-triphenyl-2,4,6,8-tetraoxa-1,9-diazonia-5-bora-3,7- diboratatricyclo[5.4.0.0^3,9]undecane

Amt¹,

Kliegel²,

Rettig³

et al. 1988

Structural studies of organoboron compounds LXII. Synthesis and structure of various N-alkylated 1,3-dioxa-4-aza-2-boracyclohexanes

Kliegel¹,

Amt²,

Becker³

et al. 1994

The synthesis of a number of variously substituted N-alkyl2-hydroxyaminoalkanols 3 and their reactions with phenylboronic acid are detailed. The crystalline products proved to be 1:2 condensates 4 in a few cases and 1:l condensates 5 in all the other cases studied. Crystals of 2-mesityl-6,6-pentamethylene-1,3-dioxa-4-aza-2-boracyclohexane, 51, are triclinic, a = 1 1.540 (2) Chem. 72,2118Chem. 72, (1994.On dCcrit la synthbse d'un certain nombre de N-alkyl 2-hydroxyaminoalcanols substituis (3) ainsi que leurs rkactions avec l'acide phCnylboronique. 11 s'avbre que, dans quelques cas, les produits cristallins obtenus sont les produits de condensation 1 : 2 (4) alors que, dans tous les autres cas CtudiCs, ce sont les produits de condensation 1 : 1 (5). Les cristaux du 2-mCsityl-6,6-pentamCthylbne-l,3-dioxa-4-aza-2-boracyclohexane, 51, sont tricliniques, groupe d'espace pi, avec a = 1 1,540 (2) [Traduit par la rCdaction]

Structural studies of organoboron compounds XL. 4,7-Dicyclohexyl-2,2,5,6-tetraphenyl- 1,3-dioxa-4-aza-7-azonia-2-boratacycloheptane

Amt¹,

Kliegel²,

Rettig³

et al. 1990

. 68, 1797 (1990). The synthesis of 4,7-dicyclohexyl-2,2,5,6-tetraphenyl-l,3-dioxa-4-aza-7-azonia-2-boratacycloheptane is reported. Crystals of the compound are orthorhombic, a = l0.893(1), b = 28.072(1), c = 10.596(1) A, Z = 4, space group P212121. The structure was solved by direct methods and was refined by full-matrix least-squares procedures to R = 0.036 and R,,. = 0.043 for 2480 reflections with1 2 3u(I). The molecule has a seven-membered chelate structure. The seven-membered ring, which has a twisted chair conformation, is stabilized b an intramolecular N-H...O hydrogen bond. Bond lengths &B = 1.468(4) and 1.554(4), C-B = 1.621 (5) A sont en accord avec une liaison relativement forte de la portion diphtnylbore par le ligand 0,O-chtlatant.Mots clis : structure cristalline, compost du organobore, compost du bore.[Traduit par la revue]

ChemInform Abstract: Structural Studies of Organoboron Compounds. Part 40. 4,7‐Dicyclohexyl‐ 2,2,5,6‐tetraphenyl‐1,3‐dioxa‐4‐aza‐7‐azonia‐2‐boratacycloheptane.

Amt¹,

Kliegel²,

Rettig³

et al. 1991

ChemInform

structure structure (organic substances) K 9000 -035Structural Studies of Organoboron Compounds.Part 40. 4,7-Dicyclohexyl-2,2,5,6-tetraphenyl-1,3-dioxa-4-aza-7-azonia-2boratacycloheptane.-An X-ray crystallographic analysis of the title compound (IV) confirms the seven-membered chelate structure, which is stabilized by an intramolecular N-H···O hydrogen bond. -(AMT, H.; KLIEGEL, W.; RETTIG, S. J.; TROTTER, J.; Can.