aziridine वाक्य
उदाहरण वाक्य
मोबाइल
- Alternatively, they can be obtained by oxidation of the corresponding aziridine.
- The original Wenker synthesis of aziridine itself takes place in two steps.
- There is relatively little human exposure data on aziridine.
- It is manufactured by heating aziridine with thiophosphoryl chloride.
- This salt is then reacted with sodium hydroxide in the second step forming aziridine.
- For example, aziridine reacts with NOCl to give ethene, nitrous oxide and hydrogen chloride.
- It seems that the whole nomination pivots around a simple small content issue-the " dimeric aziridine " problem.
- The toxicology of a particular aziridine compound depends on its structure and activity, although sharing the general characteristics of aziridines.
- However, flash vacuum pyrolysis at 500 �C leads to loss of molecular nitrogen ( N 2 ) to produce aziridine.
- An S N 2'reaction should explain the outcome of the reaction of an aziridine carrying a methylene bromide group with methyllithium:
- Phe-Aziridine-Me can then undergo a simple ring opening reaction to form dextroamphetamine and levoamphetamine ( the two active ingredients in Adderall ).
- The actual rearrangement reaction takes place when the amine group attacks the thiocarbonyl in a nucleophilic addition temporarily forming an aziridine and the thioacetamide by tautomerization.
- The International Agency for Research on Cancer ( IARC ) has reviewed aziridine compounds and classified them as possibly carcinogenic to humans ( IARC Group 2B ).
- In one study the inversion in an aziridine was slowed by a factor of 50 by placing the nitrogen atom in the vicinity of a phenolic alcohol group compared to the oxidized hydroquinone
- This reaction has three points of chemical diversity as the structure of the aziridine starting compound, the organometallic reagent, and the electrophile can all be varied to synthesize a different hydantoin.
- As a further demonstration of reactivity one study explored the properties of an ?-formyl aziridine which was found to dimerize as an oxazolidine on formation from the corresponding ester by organic reduction with DIBAL:
- "' Aziridines "'are organic compounds containing the aziridine functional group, a three-membered heterocycle with one amine group (-NH-) and two methylene bridges (-- ).
- A second Mitsunobu reaction then forms the aziridine "'14 "'available for ring-opening reaction with 3-pentanol catalyzed by boron trifluoride to ether "'15 " '.
- In making the overall evaluation, the IARC Working Group took into consideration that aziridine is a direct-acting alkylating agent which is mutagenic in a wide range of test systems and forms DNA adducts that are promutagenic.
- An improved method published in 2007 starts with the enantioselective desymmetrization of aziridine "'1 "'with trimethylsilyl azide ( TMSN 3 ) and a chiral catalyst to the azide "'2 " '.
- अधिक वाक्य: 1 2
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