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Trimethyl phosphate is a mild methylating agent, useful for dimethylation of anilines and related heterocyclic compounds. [2] The method is complementary to the traditional Eschweiler-Clarke reaction in cases where formaldehyde engages in side reactions.
Trimethyl phosphite is an organophosphorus compound with the formula P(OCH 3) 3, often abbreviated P(OMe) 3.It is a colorless liquid with a highly pungent odor. It is the simplest phosphite ester and finds used as a ligand in organometallic chemistry and as a reagent in organic synthesis.
Trimethylphosphine is a highly basic ligand that forms complexes with most metals. As a ligand, trimethylphosphine's Tolman cone angle is 118°. [7] This angle is an indication of the amount of steric protection that this ligand provides to the metal that to which it is bound.
[1] [2] The factory complex consists of 2 units of TSP fertilizer producing facility with installed capacity of 1,52,000 MT (Unit-1; 32,000 MT and Unit-2; 1,20,000 MT). [3] It was founded by East Pakistan Industrial Development Corporation (EPIDC) before the independence of Bangladesh and went into commercial production in 1974. [4]
Dimethyl methylphosphonate can be prepared from trimethyl phosphite and a halomethane (e.g. iodomethane) via the Michaelis–Arbuzov reaction. [2]Dimethyl methylphosphonate is a schedule 2 chemical as it may be used in the production of chemical weapons.
(ro) 2 poh ⇌ (ro) 2 p(o)h The P-H bond is the site of high reactivity in these compounds (for example in the Atherton–Todd reaction and Hirao coupling ), whereas in tri-organophosphites the lone pair on phosphorus is the site of high reactivity.
It is a colorless solid. Its conjugate bases, such as [N(CH 2 PO 3 H) 3] 3-, have chelating properties. ATMP can be synthesized from the Mannich-type reaction of ammonia, formaldehyde, and phosphorous acid, in a manner similar to the Kabachnik–Fields reaction. [1] [2]
The University Press Limited, commonly abbreviated as UPL, is an academic publishing house based in Dhaka, Bangladesh. [1] [2] [3] UPL was established in 1975 as a successor to Oxford University Press' Dhaka branch where Mohiuddin Ahmed was chief executive.