Abstract: Chiral ruthenium catalysts comprising salen and alkenyl ligands are provided for stereoselective cyclopropanation, and methods of cyclopropanation are provided. The chiral ruthenium catalyst is prepared in situ by combining an alkenyl ligand, a deprotonated chiral salen ligand, and a ruthenium (II) metal. A preferred catalyst is prepared in situ by combining 2,3-dihydro-4-venylbenzofuran,deprotonated 1,2-cyclohexanediamino-N,N?-bis(3,5-di-t-butyl-salicylidene) and RuCl2(p-cymene)]2.

Abstract: Chiral ruthenium catalysts comprising salen and alkenyl ligands are provided for stereoselective cyclopropanation, and methods of cyclopropanation are provided. The chiral ruthenium catalyst is prepared in situ by combining an alkenyl ligand, a deprotonated chiral salen ligand, and a ruthenium (II) metal. A preferred catalyst is prepared in situ by combining 2,3-dihydro-4-venylbenzofuran, deprotonated 1,2-cyclohexanediamino-N,N?-bis(3,5-di-t-butyl-salicylidene) and RuCl2(p-cymene)]2.

Abstract: Chiral ruthenium catalysts comprising salen and alkenyl ligands are provided for stereoselective cyclopropanation, and methods of cyclopropanation are provided. The chiral ruthenium catalyst is prepared in situ by combining an alkenyl ligand, a deprotonated chiral salen ligand, and a ruthenium (II) metal. A preferred catalyst is prepared in situ by combining 2,3-dihydro-4-venylbenzofuran, deprotonated 1,2-cyclohexanediamino-N,N?-bis(3,5-di-t-butyl-salicylidene) and RuCl2(p-cymene)]2.

Abstract: Chiral ruthenium catalysts comprising salen and alkenyl ligands are provided for stereoselective cyclopropanation, and methods of cyclopropanation are provided. The chiral ruthenium catalyst is prepared in situ by combining an alkenyl ligand, a deprotonated chiral salen ligand, and a ruthenium (II) metal. A preferred catalyst is prepared in situ by combining 2,3-dihydro-4-venylbenzofuran, deprotonated 1,2-cyclohexanediamino-N,N?-bis(3,5-di-t-butyl-salicylidene) and RuCl2(p-cymene)]2.

Abstract: Chiral ruthenium catalysts comprising salen and alkenyl ligands are provided for stereoselective cyclopropanation, and methods of cyclopropanation are provided. The chiral ruthenium catalyst is prepared in situ by combining an alkenyl ligand, a deprotonated chiral salen ligand, and a ruthenium (II) metal. A preferred catalyst is prepared in situ by combining 2,3-dihydro-4-venylbenzofuran, deprotonated 1,2-cyclohexanediamino-N,N?-bis(3,5-di-t-butyl-salicylidene) and RuCl2(p-cymene)]2.

Abstract: Chiral ruthenium catalysts comprising salen and alkenyl ligands are provided for stereoselective cyclopropanation, and methods of cyclopropanation are provided. The chiral ruthenium catalyst is prepared in situ by combining an alkenyl ligand, a deprotonated chiral salen ligand, and a ruthenium (II) metal. A preferred catalyst is prepared in situ by combining 2,3-dihydro-4-venylbenzofuran, deprotonated 1,2-cyclohexanediamino-N,N?-bis(3,5-di-t-butyl-salicylidene) and RuCl2(p-cymene)]2.

Abstract: Chiral ruthenium catalysts comprising salen and alkenyl ligands are provided for stereoselective cyclopropanation, and methods of cyclopropanation are provided. The chiral ruthenium catalyst is prepared in situ by combining an alkenyl ligand, a deprotonated chiral salen ligand, and a ruthenium (II) metal. A preferred catalyst is prepared in situ by combining 2,3-dihydro-4-venylbenzofuran, deprotonated 1,2-cyclohexanediamino-N,N?-bis(3,5-di-t-butyl-salicylidene) and RuCl2(p-cymene)]2.

Abstract: The present invention is a housing for a surface-mountable device such as a security device (a PIR, a microwave motion detector, and the like). The housing has a surface-mountable housing portion with at least one aperture for receiving a surface-mounting member therethrough, the housing portion fabricated substantially from a plastic material. A member-retaining portion is integrally molded with the housing portion and extends substantially perpendicular from said housing portion, said member-retaining portion adapted to receive a surface-mounting member when inserted therethrough and retain said surface-mounting member in place. As a result of this configuration, when a surface-mounting member such as a screw is inserted therethrough, the surface-mounting member is held in place by the member-retaining portion and is insertable through the aperture when pressure is applied thereto.