Hiram Isaac Beltran

7 Questions 69 Answers 0 Followers

Questions related from Hiram Isaac Beltran

How to perform ab initio Rietveld refinement to obtain chemical structure from PXRD data?

Please aid with software as well as strategies in order to get X-ray structure in a similar fashion to single crystal X-ray refinement. We have D2 Phaser-Bruker XRD instrument to obtain PXRD data...

08 August 2019 8,007 2 View

How can I carry cryclotrimerization reaction of acetophenones to yield 1,3,5-triarylbenzenes?

We want to obtain 1,3,5- triarylbenzenes starting from acetophenones and their cyclocondensation reactions. Preferably should be used atmospheric conditions for this reaction. Solvent or solvent...

10 October 2015 1,094 5 View

How to remove dicyclohexylurea without column separation from the "DCC + Amine + Carboxylate -> Amide" condensation reaction.

We obtained the corresponding amide in THF or CHCl3 but it can not be easily recrystallized to separate it from reaction mixture. Amide is of fatty acid nature.

02 February 2013 817 10 View

How to functionalize, e.g. TiO2, nanoparticles to get free carboxylic acid groups into the surface for further coupling of substrates?

The functionalization can be developed during the synthesis of nanoparticles or once that they are already obtained through a second step in the preparation methodology.

12 December 2012 2,068 6 View

What is the best methodology to obtain amides starting from carboxylic fatty acids or from esters, and aromatic amines

Could be described (non)catalytic procedures.

12 December 2012 2,083 7 View

How to obtain triazines starting from primary amine and aldehyde?

A lab scale procedure

11 November 2012 6,310 1 View

Where can I find an online resource to get XRD JCPDS files?

We are willing to make notice of Miller indices present in XRD powder and single crystals and managed as their JCPDS files. We need them for various substances, e.g. rare earth salts, as well as...

01 January 1970 10,090 71 View