77956-70-8

Basic information

• Product Name: 1-Benzoxepin-3,5(2H,4H)-dione, 7-methyl-
• CAS NO: 77956-70-8
• Molecular Formula: C11H10O3
• Molecular Weight: 190.199
• Mol File: 77956-70-8.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 1-Benzoxepin-3,5(2H,4H)-dione, 7-methyl-(CAS DataBase Reference)
• NIST Chemistry Reference: 1-Benzoxepin-3,5(2H,4H)-dione, 7-methyl-(77956-70-8)
• EPA Substance Registry System: 1-Benzoxepin-3,5(2H,4H)-dione, 7-methyl-(77956-70-8)

Safety Data

• Hazardous Substances Data: 77956-70-8(Hazardous Substances Data)

Upstream product

• 58335-85-6 (2-acetyl-4-methylphenoxy)acetic acid ethyl ester 

Downstream Products

• 102221-28-3 3-Ethylamino-7-methyl-3,4-dihydro-2H-benzo[b]oxepin-5-one; hydrochloride 
• 77957-18-7 7-Methyl-3-methylamino-3,4-dihydro-2H-benzo[b]oxepin-5-one; hydrochloride 

Relevant articles and documents

Benzofuran Derivatives. Part 4. Synthesis of Benzofurans and 2,3,4,5-Tetrahydro-1-benzoxepin-3,5-diones

By treatment of ethyl 4- or 5-substituted 2-acetylphenoxyacetates 1 with potassium hydroxide in dry dioxane, benzofurans 2-7 and 2,3,4,5-tetrahydro-1-benzoxepin-3,5-diones 8 were obtained.The relative yields of benzofurans 2-7 and 2,3,4,5-tetrahydro-1-benzoxepin-3,5-diones 8 varied with the types of 4- or 5-substituents.The electron-donating 4-methoxyl group favored the formation of benzoxepins.On the other hand, electron-withdrawing substituents such as the 4-nitro group favored the formation of benzofurans.When esters 1 were treated with sodium amide,2,3-dihydrobenzofurans 2 were obtained exclusively regardless of 4- or 5-substituents.