(1R,3R,4R,7S)-7-[2-cyanoethoxy(diisopropylamino)phosphinoxy]-1-(4,4′-dimethoxytrityloxymethyl)-3-(5-ethynyluracil-1-yl)-2,5-dioxabicyclo[2.2.1]heptane

Base Information

• Chemical Name: (1R,3R,4R,7S)-7-[2-cyanoethoxy(diisopropylamino)phosphinoxy]-1-(4,4′-dimethoxytrityloxymethyl)-3-(5-ethynyluracil-1-yl)-2,5-dioxabicyclo[2.2.1]heptane
• CAS No.: 1202937-27-6
• Molecular Formula: C₄₂H₄₇N₄O₉P
• Molecular Weight: 782.83
• Mol file: 1202937-27-6.mol

Synonyms:(1R,3R,4R,7S)-7-[2-cyanoethoxy(diisopropylamino)phosphinoxy]-1-(4,4′-dimethoxytrityloxymethyl)-3-(5-ethynyluracil-1-yl)-2,5-dioxabicyclo[2.2.1]heptane

Chemical Property of (1R,3R,4R,7S)-7-[2-cyanoethoxy(diisopropylamino)phosphinoxy]-1-(4,4′-dimethoxytrityloxymethyl)-3-(5-ethynyluracil-1-yl)-2,5-dioxabicyclo[2.2.1]heptane

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (1R,3R,4R,7S)-7-[2-cyanoethoxy(diisopropylamino)phosphinoxy]-1-(4,4′-dimethoxytrityloxymethyl)-3-(5-ethynyluracil-1-yl)-2,5-dioxabicyclo[2.2.1]heptane

There total 5 articles about (1R,3R,4R,7S)-7-[2-cyanoethoxy(diisopropylamino)phosphinoxy]-1-(4,4′-dimethoxytrityloxymethyl)-3-(5-ethynyluracil-1-yl)-2,5-dioxabicyclo[2.2.1]heptane which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 83.0%

(1R,3R,4R,7S)-1-(4,4'-dimethoxytrityloxymethyl)-3-(5-ethynyluracil-1-yl)-7-hydroxy-2,5-dioxabicyclo[2.2.1]heptane (1202937-25-4) + 2-cyanoethyl-N,N-(diisopropylamino)chlorophosphine (124482-92-4,89992-70-1) → (1R,3R,4R,7S)-7-[2-cyanoethoxy(diisopropylamino)phosphinoxy]-1-(4,4′-dimethoxytrityloxymethyl)-3-(5-ethynyluracil-1-yl)-2,5-dioxabicyclo[2.2.1]heptane (1202937-27-6)

Guidance literature:

With N-ethyl-N,N-diisopropylamine; In dichloromethane;

DOI:10.1039/b917312a

Reference yield:

(1S,3R,4R,7S)-7-hydroxy-1-hydroxymethyl-3-(5-iodoracil-1-yl)-2,5-dioxabicyclo[2.2.1]heptane (1202937-22-1) → (1R,3R,4R,7S)-7-[2-cyanoethoxy(diisopropylamino)phosphinoxy]-1-(4,4′-dimethoxytrityloxymethyl)-3-(5-ethynyluracil-1-yl)-2,5-dioxabicyclo[2.2.1]heptane (1202937-27-6)

Guidance literature:

Multi-step reaction with 4 steps

1: pyridine / 16 h / 20 °C / Inert atmosphere

2: triethylamine / tetrakis(triphenylphosphine) palladium⁽⁰⁾; copper(l) iodide / N,N-dimethyl-formamide / 12 h / 20 °C / Inert atmosphere; Darkness

3: tetrabutyl ammonium fluoride / tetrahydrofuran / 2 h / 20 °C

4: N-ethyl-N,N-diisopropylamine / dichloromethane / 2 h / 20 °C / Inert atmosphere

With pyridine; tetrabutyl ammonium fluoride; triethylamine; N-ethyl-N,N-diisopropylamine; copper(l) iodide; tetrakis(triphenylphosphine) palladium⁽⁰⁾; In tetrahydrofuran; dichloromethane; N,N-dimethyl-formamide; 2: Sonogashira Coupling;

Reference yield:

(1R,3R,4R,7S)-1-(4,4'-dimethoxytrityloxymethyl)-7-hydroxy-3-(5-iodoracil-1-yl)-2,5-dioxabicyclo[2.2.1]heptane (1202937-23-2) → (1R,3R,4R,7S)-7-[2-cyanoethoxy(diisopropylamino)phosphinoxy]-1-(4,4′-dimethoxytrityloxymethyl)-3-(5-ethynyluracil-1-yl)-2,5-dioxabicyclo[2.2.1]heptane (1202937-27-6)

Guidance literature:

Multi-step reaction with 3 steps

1: triethylamine / tetrakis(triphenylphosphine) palladium⁽⁰⁾; copper(l) iodide / N,N-dimethyl-formamide / 12 h / 20 °C / Inert atmosphere; Darkness

2: tetrabutyl ammonium fluoride / tetrahydrofuran / 2 h / 20 °C

3: N-ethyl-N,N-diisopropylamine / dichloromethane / 2 h / 20 °C / Inert atmosphere

With tetrabutyl ammonium fluoride; triethylamine; N-ethyl-N,N-diisopropylamine; copper(l) iodide; tetrakis(triphenylphosphine) palladium⁽⁰⁾; In tetrahydrofuran; dichloromethane; N,N-dimethyl-formamide; 1: Sonogashira Coupling;

upstream raw materials:

(1R,3R,4R,7S)-1-(4,4'-dimethoxytrityloxymethyl)-3-(5-ethynyluracil-1-yl)-7-hydroxy-2,5-dioxabicyclo[2.2.1]heptane

2-cyanoethyl-N,N-(diisopropylamino)chlorophosphine

1-((1S,3R,4R,7S)-7-hydroxy-1-(hydroxymethyl)-2,5-dioxabicyclo[2.2.1]heptan-3-yl)pyrimidine-2,4(1H,3H)-dione

(1R,3R,4R,7S)-1-(4,4′-dimethoxytrityloxymethyl)-7-hydroxy-3-[5-(trimethylsilylethynyl)uracil-1-yl]-2,5-dioxabicyclo[2.2.1]heptane