天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

Home Cart 0 Sign in  

[ CAS No. 1850-14-2 ] {[proInfo.proName]}

,{[proInfo.pro_purity]}
Cat. No.: {[proInfo.prAm]}
HazMat Fee +

There will be a HazMat fee per item when shipping a dangerous goods. The HazMat fee will be charged to your UPS/DHL/FedEx collect account or added to the invoice unless the package is shipped via Ground service. Ship by air in Excepted Quantity (each bottle), which is up to 1g/1mL for class 6.1 packing group I or II, and up to 25g/25ml for all other HazMat items.

Type HazMat fee for 500 gram (Estimated)
Excepted Quantity USD 0.00
Limited Quantity USD 15-60
Inaccessible (Haz class 6.1), Domestic USD 80+
Inaccessible (Haz class 6.1), International USD 150+
Accessible (Haz class 3, 4, 5 or 8), Domestic USD 100+
Accessible (Haz class 3, 4, 5 or 8), International USD 200+
Chemical Structure| 1850-14-2
Chemical Structure| 1850-14-2
Structure of 1850-14-2 * Storage: {[proInfo.prStorage]}

Please Login or Create an Account to: See VIP prices and availability

Cart0 Add to My Favorites Add to My Favorites Bulk Inquiry Inquiry Add To Cart

Search after Editing

* Storage: {[proInfo.prStorage]}

* Shipping: {[proInfo.prShipping]}

Quality Control of [ 1850-14-2 ]

Related Doc. of [ 1850-14-2 ]

Alternatived Products of [ 1850-14-2 ]
Product Citations

Product Details of [ 1850-14-2 ]

CAS No. :1850-14-2 MDL No. :MFCD00008473
Formula : C5H12O4 Boiling Point : -
Linear Structure Formula :- InChI Key :AHJWSRRHTXRLAQ-UHFFFAOYSA-N
M.W : 136.15 Pubchem ID :74613
Synonyms :

Safety of [ 1850-14-2 ]

Signal Word:Danger Class:3
Precautionary Statements:P210-P233-P240-P241-P242-P243-P261-P264-P271-P280-P303+P361+P353-P304+P340+P312-P305+P351+P338-P332+P313-P337+P313-P370+P378-P403+P233-P403+P235-P405-P501 UN#:1993
Hazard Statements:H225-H315-H319-H335 Packing Group:Ⅱ
GHS Pictogram:

Application In Synthesis of [ 1850-14-2 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Downstream synthetic route of [ 1850-14-2 ]

[ 1850-14-2 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 1850-14-2 ]
  • [ 17672-21-8 ]
  • [ 57260-71-6 ]
  • [ 1014712-37-8 ]
YieldReaction ConditionsOperation in experiment
18% With acetic acid; In chloroform; at 60℃; In accordance with the invention, substituted 2-aminobenzoxazoles can be prepared in one pot using commercially available tetramethyl orthocarbonate (2 eq, Aldrich), an amine (2 eq), and an optionally substituted 2-aminophenol (1 eq). The reaction maybe carried out in the presence of acetic acid (4 eq) in chloroform at 60C (using a sealed tube for volatile amines). Tetramethyl orthocarbonate can be successfully replaced by its tetraethyl analogue in this reaction. Other useful solvents for the reaction include methanol, ethanol, isopropyl alcohol, acetonitrile, tetrahydrofuran, ethyl acetate, toluene, and combinations thereof.The mild reaction conditions permit the reaction to be applied to compounds with sensitive functional groups, for example, esters. The reaction is clean, providing virtually spot-to-spot conversion from an aminophenol to a 2-methoxybenzoxazole to a 2-aminobenzoxazole. The work-up and purification is straightforward and easy; in many cases, a simple re-crystallization may be sufficient for purification of final compounds. The reaction is versatile, as is demonstrated by the variety of amine reactants listed in TABLE 1. As shown by the structures included in TABLE 2, electron donating and withdrawing substituents on the 2-aminophenol are also well tolerated. The reaction by-products are methanol and, optionally, acetic acid. A simplified work-up may only involve concentration under reduced pressure, which makes the reaction particularly amenable to large-scale production. The reaction can be carried out in a variety of solvents, including methanol, acetonitrile, tetrahydrofuran, ethyl acetate, and toluene. Optionally, the solvent may include an acid such as acetic acid. However the reaction proceeds in good yield in chloroform without acetic acid.
  • 2
  • [ 1850-14-2 ]
  • [ 89415-54-3 ]
  • 6-bromo-2-methoxy-3-methylimidazo<4,5-b>pyridine [ No CAS ]
YieldReaction ConditionsOperation in experiment
With acetic acid; at 100℃; for 1.5h; A solution of 5-bromo-N*2*-methylpyridine-2,3-diamine (Stage 67.1.4, 960 mg, 4 75 mmo.) and tetramethyl orthocarbonate (Aki?ch, Buchs, Switzerland, 2 ml, 14 7 mmol) and acetic acid (0 273 ml, 4 75 mmol) was stirred for 90 min at 100 C The reaction mixture was diluted with EtOAc and washed with saturated aqueous NaHCO3 and brine The aqueous layer was extracted with EtOAc and the combined organic layers washed with saturated aqueous NaHCO3 and with brine, then dried over Na2SO4, filtered and evaprated The crude product was dry loaded on silica gel and purifted by MPLC (DCM/MeOH 0% - 4%) to g>;ve the title compound as a green solid. (HPLC tR 2.83 mm (Method A), M+H - 242, 244 MS-ES).
Recommend Products
Same Skeleton Products

Technical Information

Historical Records
; ;