Muhammad Nazrul Islam

5 Questions 7 Answers 0 Followers

Questions related from Muhammad Nazrul Islam

Is it possible to use Grubbs catalyst 3rd generation at high temperature for ROMP?

I am planning to use Grubbs 3rd generation catalyst at 80 to 100 degree centigrade temperate to polymerize highly branched oxanorbornene cored monomer to synthesized graft copolymer. Is there any...

10 October 2018 9,422 0 View

How to purify mono-BOC-ethylenediamine or N-tert-butoxycarbonylaminoethylamine by Column cromatography?

How to purify mono-BOC-ethylenediamine or N-tert-butoxycarbonylaminoethylamine (EDA-BOC) by Column cromatography? I used ethylacetate (100% ) over silica gel to purify but it does not work....

10 October 2017 1,686 4 View

How to calculate % yield and reactivity ratio in poly(Styrene methylmethacrylte) synthesis ?

To synthesis poly(Styrene methylmethacrylte) I took 14.065g (135mmole) of styrene and 4.515g (45mmole) of methylmethacrylate in 70ml of methanol and 0.303g of AIBN initiator to do solution...

01 January 2017 389 4 View

How to remove TFA salt ?

After BOC depreciation by TFA and DCM I probably got R-NH3+-OOCCF3 after evaporation. But I want to get the compound salt free (R-NH2 form) ? How can I get R-NH2 form from R-NH3+-OOCCF3 ?

04 April 2016 5,904 7 View

How to confirm BOC deprotection by TFA ?

BOC deprotection by TFA form a salt, i.e ( R-CH2-NH-CH2-CH2-NH3+-OOCCF3 ) . What would be the proton NMR peak for -NH3+ portion of this salt ? or IR spectra ? Does any reference article ?

03 March 2016 765 4 View