- Nonracemic menthyl phosphorylacetates
-
Phosphorylacetic acid esters containing the menthoxy fragment at the phosphorus atom or at the carbonyl group were synthesized. The configurations of the enantiomerically pure compounds, viz., methyl (ethoxy)(menthyloxy) phosphorylacetate and menthyl [(2-
- Bredikhin,Eliseenkova,Tarasova,Voskresenskaya,Balandina,Dobrynin,Latypov,Litvinov,Sharafutdinova,Efremov
-
p. 290 - 297
(2008/03/12)
-
- Synthesis of phosphorus derivatives from 1,3-dioxolan-2-one
-
A new route for the synthesis of some mixed organic phosphorus compounds from 1,3-dioxolan-2-one is reported. By heating a mixture of phosphorus-chlorine derivatives and 1,3-dioxolan-2-one in the presence of a catalyst, mixed phosphorus derivatives having 2-chloroethyl ester groups could be obtained. A wide range of phosphorus derivatives can be obtained using this method.
- Ilia, Gheorghe,Bora, Alina,Iliescu, Smaranda,Popa, Adriana,Dehelean, Gheorghe
-
p. 2491 - 2496
(2007/10/03)
-
- Preparation and Properties of, and Reactions with, Metal-Containing Heterocycles, XXXVII. Investigations on the Reactivity and Decomposition of Unstable Oxaphosphamanganacyclopentanes
-
The thermally labile five-membered metallacycles (OC)4Mn-(PPh2OCHR1)-CHR2 (3a-c) are obtained by reductive cycloelimination of (OC)4BrMnPPh2OCHR1CHR2Cl (2a-c) with sodium amalgam at 0 deg C in ether.According to kinetic investigations the decomposition of 3a-c, which results in the formation of2 (4) and ethene or propene, respectively, follows a first-order rate law.The estimated activation parameters ΔH*, ΔS*, and ΔG* indicate decreasing stability within the series 3b > 3a > 3c.The action of Co or HBr on 3a generates the phosphane oxide complex (OC)5MnP(Ph)2O (5) and (OC)4BrMnPPh2OH (6), respectively.Sulfur dioxide is easily inserted into the Mn-C ?-bond of 3a-c with formation of the stable cyclic sulfinato-S complexes (OC)4Mn-(PPh2OCHR1CHR2)-SO2 (7a-c).
- Lindner, Ekkehard,Broesamle, Andreas
-
p. 2730 - 2744
(2007/10/02)
-